I commented on this on a previous thread. I haven't read anything indicating a link between HepB and fertility problems.
Hepatitis B is endemic in Southeast Asia, China, and Africa and these places have population booms. This goes against such link.
Yes, I have three children and I conceived easily. I have not heard of Hep B interfering with fertility. Many couples take a year to conceive. I'm not sure if you have access to this book but "Taking Charge of Your Fertility" is an excellent book for any woman but especially someone trying to conceive.