I was asked to add a chapter on Sev's reactions to Harry being pregnant. Here it is. Hope you like.
Passing Notes Chapter 3

Mood swings, Harry Potter-Snape ruminated, were only fun when you weren't bursting into tears at the slightest provocation. He was only five months pregnant and already he and his husband had fought more times than he could remember, and all over trivial things, like whether pickles on toast was a suitable breakfast.

Harry was also prone, due to the high levels of oestrogen running rampantly around his system, to crying if anyone yelled at him, or spoke to him, or just looked at him funnily really. As a result he had been forced to go on paternity leave; well they couldn't very well call it maternity leave when he was going to be a father could they? His magic was a little off as well. He couldn't control how much power he put into a spell, so he had accidentally blasted a hole in his classroom wall.

Severus Potter-Snape had been hysterical when he had been told but it cost him; one night on the couch before his grovelling finally broke down his husband's temper. The Potions Master was slowly going out of his mind. He was walking on eggshells all the time; he just didn't know how to act around his pregnant spouse. Harry had never been so easily hurt, usually he understood his sense of humour and allowed Severus' sarcasm to go over him but not anymore and Severus wasn't sure how much longer he could keep his mouth shut. Not to mention that his husband's sex drive had become non-existent these past two months!

Finally, in desperation, he went to the resident medi-witch. "Poppy, please, I don't know what to do. I can't handle the mood swings anymore." The usually composed man sat down on the edge of a bed and looked at Poppy helplessly.

Hiding a laugh the medi-witch took a seat beside her colleague of many years. "He can't help it you know." She commented.

"I know he can't help it. It's the bloody hormones. I can cope with them. I want my husband back!" Severus sighed.

Putting her hand on his shoulder Poppy said, "Well, I think I can give you the recipe for a potion that will help settle the hormone levels. That will help some. Just think. There's only four months left and then you'll have your child in your arms."

Severus smiled softly. They didn't know what the gender was yet but he and Harry were debating names for both boys and girls. "Please, Poppy. I'll brew it tonight."

It took some convincing for Harry to take the potion. He was in one of his 'moods'. He was convinced that Severus didn't love him and that this was just a plot to change him into the perfect husband.

"You're off your bloody rocker! I love you Harry. This will just stop you from being so bloody hormonal all the time." Severus yelled from across the living room, holding the pillow Harry had just thrown at him. He stormed out of their quarters to cool down.

When he returned twenty minutes later he could see that Harry's mood was gone and that he'd been crying.

Harry stood up to meet his husband with outstretched arms, "I'm so sorry Sev. I don't know what keeps coming over me. I'll take the potion."

Severus sighed in relief, holding out the yellow potion. He had flavoured it especially for his husband because Harry always complained about the taste of his potions and in his state he often couldn't keep them down.

Harry downed the contents of the vial, his face perking up at the butterscotch flavouring. He kissed his husband in thanks.

Severus moaned mentally when Harry drew back. He missed sex!

A few weeks later it was apparent that the potion was working. He hadn't been forced to sleep on the couch for three weeks and Harry wasn't crying as much. He even went back to help out Remus, his supply, with the DADA classes a few days a week.

Harry watched his husband from across the bedroom. He knew that Severus was frustrated. He missed intimacy with his husband as well but he felt like a beached whale. Not sexy at all. He just didn't feel aroused at all anymore. Although, Poppy told him that this was normal.

'Well. At least this potion is working.' He thought. It was much easier to get through the day when he wasn't crying for most of it. He had begun to decorate their spare bedroom for the new arrival.

Sat at the Staff Table in the Great Hall a week later Harry caught sight of his husband's hands. He was immediately reminded of what those hands could do to him and was astonished to find himself becoming aroused.

Blinking in surprise Harry conjured a piece of parchment and a quill. He hastily scribbled a message and then got up, dropping in into his lover's lap as he passed.

Severus frowned as he opened the note. As he read the words his eyes opened wide and he jumped out of his chair, catching up to his husband before he even got to the dungeon entrance, picking him up and rushing down to their rooms.

Everyone was staring at the door Professor Snape had just dashed through. Albus noticed the note and summoned it to himself. His boys liked writing notes didn't they?

He almost choked on his pumpkin juice as he read the scribbled note. All it said was "I'm horny".