I was going to put this little piece of information at the beginning of my next chapter, but I had quite a few people email about it, so I thought I would put it in right away.
I know I said in chp. 24 that she was having a boy, but mistakes can be made, especially concerning the sex of an unborn baby. I have aready explained this to some of my readers, so there are those that already know and i ask you to please be patient with me. Sometimes I have so much going on in my head at the same time that I forget that the readers can't read my mind and don't know everything I am thinking. It was my original intention for the sex of the baby to be misdiagnosed, but I forgot to mention it.
Remusthoughthe smelled another male on her and so therefore she was cheating on him and the reason for their fight and long seperation.
Hermione kind of figured she was pregnant, but didn't know for sure. When Remus made those accusations, she knew, because she knew she hadn't been with anyone else. She assumed it was a boy because Remus kept asking who she was with because he could smell someone else and since she knew she wasn't a lesbian, to her, he smelled the baby and thus it meant it had to be a boy.
Madame Pomfrey tested the sex it came out a boy also, but Hermione and Remus had just been together and his 'fluids' were still on and in her. The spell picked up Remus DNA because it was more accessible(being outside her body) and since he was almost an adult it was stronger than the baby's inside her. So it looked like she was having a boy, when in actuality she was pregnant with a girl. It really isn't a big deal to the story, at least not in this one, the sequel MAYBE!