So ladies im seeking advice, and please no rude comments. My bf and I have been together for a…

So ladies im seeking advice, and please no rude comments. My bf and I have been together for a little over a year, im almost 27 weeks. Well last May I had a jerk of a bf and got pregnant, I miscarried early on and no one knew I was even pregnant. People keep saying that I used my current bf to get pregnant, but I was on birth control when I concieved. I keep wondering if I should tell my bf about my miscarriage...But im terrified that he might think I used him to or get mad that I kept it from him this long. Any ideas on if I should or how to bring it up?