For someone if you are a first timer not to have anal sex
You would know if you had for the fist time as it would
be painful for a few days after.
Of course a lot of hetrosexual men like sticking things
up the anal passage and if this is you then you may not
know if you had been raped.
It might just be better for you mentally if you go and
get a few checks done.
And if you are embarrassed about asking for STD and aids
test to be done tell them you need it for health cover.