I (a male) have recently had unprotected anale sex with another male in which I was the one inserting. He says that it didn't hurt at all, and that he only felt soar afterwards. He also claims to have no complication when taking a dump, and that he didn't poop out blood. I used precum and saliva (lots of saliva) to be able to insert it into him with ease. I also asked while starting to insert if it hurts, and I did it as slow as I could.
Should I still be paranoid of the possibility of him or I having some sort of STDs?