His dick was bleeding?

So my boyfriend and I were having sex the other night and he was wiping himself off after and we saw there was blood. We assumed it was me spotting and didn’t think anything of it.

We then went to have sex another time the same night and it was dark. I immediately noticed that the precum looked darker so I turned a light on and it was bloody. He said that sometimes when he wears white boxers there are small blood marks and he thinks it’s just from his dick getting irritated from rubbing against his underwear and pants. He said it’s not actually his cum or anything inside but the outside. After he came that time there was more blood, like a glob too. So I feel like that’s not from the outside..

He has neverrrr mentioned this to me before and this is the first time (in 6 years) that I’ve noticed it. I’m really concerned now!!! I have an appointment this coming week and I’m asking to be tested because I find it strange af. I told him he should go see a doctor but he insists that it’s fine. But that’s obviously not normal, so..

Opinions?