A lil back story

I'm the oldest of a set of triplets. We were IVF. We were born @ 27 weeks. 13.5 weeks early. I was two pounds two ounces when I was born. Because I was so early I was on a lot of drugs and am super worried about being able to get pregnant since the doctors said I could be steril. But thankfully I've been regular since I got an IUD in February. My fiancé and I have been together for almost 8 years. I've been on birth control the entire time and haven't gotten pregnant yet (all in the plan) were getting married next year and will start trying for a lil one after we turn 29 I'm super nervous it isn't gonna happen for us =/