I think I made a huge mistake & I can't tell if this guy is just playing me!? What should I do?

First thing was the mistake of u sleepin wit him,he already knws how cheap u r. 2rd if he is really interested in u he shud hav added u as a friend on fb,don add hm at all, if hes a rl man he shud b beggn to add u,ths guy is playn u already,an if he cmes bak to u, he wud only want sex,cz u wud b the easiest to slp wit,how do u knw hes got u infectd an if hes been slpn wit gals anyhowly,u hv 2 knw the guy inorder for hm to gt into u,an b careful of ur own body gal,use a condom,no matter the trust.Gud luck.