Small amount of bleeding after sex

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Im not sure how long it's been going on but I bleed after sex. Its not a lot, just enough to notice pink on tissue when we're cleaning up afterwards.

I've been with my boyfriend for almost 6 years. We've always used condoms and Im allergic to spermicide, so we stopped using those types a long time ago. Its not like the sex is super rough but we don't have sex a lot these days, so when we do, things feel tighter.

I've been going to the gyno and I've never had any issues. My pap I had recently also made me bleed a little but she told me to expect that.

Any ideas why this is happening? I feel a little sore/burning if I pee after having sex but it's gone in a few hours.

Thanks

EDIT: and things are well-lubed;)