Advice/ Validation for Sex Injury

ok, so, I had sex 2 days ago and there was slight mishap at the very end that caused some pain for me, I wasn’t wet enough, ouch. A day later, I started bleeding pretty lightly. I’m on Nuvaring, btw, and I was about to start my period, so I’ve had some cramps— some clearly period, others felt sex injury related.

When I started bleeding lightly, I was pretty much certain that it was related to the mishap, and I’m still having light bleeding. It’s pretty much pink and brown, consistent with the other (far smaller) moments I’ve gotten an injury. It doesn’t feel at all like a period, and when I took my Nuvaring out today, I’m pretty sure I could feel the injury.

It really isn’t bothering me that much, and I’m due for my period in 2-3 days. I’d like to know when I should be concerned, if at all. It’s happened before on a smaller scale, just now that birth control is thrown in the mix and it’s worse, I’m a little more concerned.

Yes, I’m going to be using lube in the future! It was a moment of laziness that I regretted lol. Thanks y’all.