Painful sex?

Amber

So I’m currently TTC our first.. I had leukaemia when I was 4, and endured 2 years of chemotherapy.

In February I got my period, and it lasted 6-7 weeks. The doctor had to give me meds, and make me go back on the pill for a couple months to regulate. I did. And haven’t taken birth control since May/June.

In the past couple months, there have been quite a few occasions where when we’ve had sex it hurts, one point last week I was in tears. Sometimes there’s a bit of throbbing afterwards in lower Abdomen, no blood. I’m just curious, if anyone’s experienced this? Is it really bad? Advice?