Dear doctors i known have asked many questions before about non risk exposure but this time is different because new type of exposure happened 

I met with a gay top and csw together as 3 it start like this 

I was standing naked and the lady keep playing with my penis and the male was naked on my back touching my ass and ass hole with his finger also his dick was touching my ass hole the problem is idk if he put his dick near to my ass hole i couldn’t remember and i asked he said he didn’t remember then after the lady alone keep fingering me and masturbate me until i come but i feel after little pain of my ass hole i don’t know if it is from lady finger or the male put his penis inside . 

FYI My ass hole is too tight and i never tried this to put more that 10% of finger it is too hurt is i do . 

Idk is there any risk of this exposure?

If he didn’t put it inside my anal what about if his pre cum came to my anal hole ? 

I found very little tiny blood after couple of hours of the exposure is it make difference?

Thank you