Feeling alone

I just found out in October I had scar tissue restricting my tubs & had surgery to remove it. The Dr. said I could possibly conceive on our own but there's a chance there was to much damage and I'd need IVF. My husband said absolutely not and if it happens naturally it's ment to be. So I've been watching my schedules like a hawk. Last month I was late but then it came. So that was around Christmas time, guess what else happened, both of my sister~in~laws announced they are pregnant. I've had several melt downs because of it and I'm feeling like I'm annoying my husband now. I sit at home alone before bed crying and hoping I don't have to see them anytime soon because I just don't know how I'll be able to smile and talk about their babies when all I want is one of my own.