I had protected anal sex with a female, condom never broke( i checked) and i was careful to not have much skin to skin contact(if that makes sense) now my anxiety kicks in if i could catch a std/sti. would this short encounter warrant my anxiety???

Your anxiety is not uncommon in most men in extramarital sexual relationship. However, you have used appropriate protection so you should not worry too much.

Condoms help but are not protective against many STDs, e.g, herpes, HPV, syphilis, LGV etc. If you have any concerns, see a doctor to get tested. Safe sex: https://www.hopkinsmedicine.org/health/wellness-and-prevention/safer-sex-guidelines