Insecure

Hello everyone! I feel extremely insecure because there's days my boyfriend gets off in legit 2 minutes and I'm not fully satisfied, and other days, he doesn't get off at all. But to this day, it's been three months since we've been intimate, I have a medical condition wherw I can't carry full term just yet, and it seems like he uses that as an excuse, I gave him the option of pulling out, or letting me finish for him.. Anything we can do to spice up our sex life?