Trying for baby#2

Angel

Hi, I'm still breastfeeding my 15 month old and have had regular periods for 5 months now, we've been having unprotected sex since she was around 8 months old. I'm confused as to why I've not gotten pregnant yet, I know it takes long and I feel insensitive writing this post as most people wait a lot longer but I got pregnant with my first child the second month of trying. I keep thinking there's something wrong with me or is it just harder to get pregnant while breastfeeding. I'm reading a lot of mixed things online.