TTC after an abortion

It's been exactly 3 years since I've had my abortion. A decision that was extremely hard for me to make. I hadn't been on the pill for years and figured it would never happen but I slept with this guy a couple times and bam...I get pregnant. I had no support from him or the few people I told so I chose abortion. Long story short I've been with my current bf for over a year and we never use protection, I've tried all kinds of apps to determine my ovulation, but still no luck :( I'm starting to think I'm not able to get pregnant, as if I've cursed myself. I'm 31 and hes 25 and has a 5 years old so I know it's not him. Just wondering if anyone else has been through this?! Needing some positive vibes! Thank you!