You have to accept the fact that you are in risk for other STD's.
i'm being on prep for 3 years now, first i was a kind of scared about contracting STD's but was barebacking a lot with strangers i met online, after a few months i tested positive for the first time. had 3 STD's at the same time. but it wasn't scared at all. in fact i was feeling like a horny slut knowing i contracted the STD's.
i got treatment and after a week i was clean again and picked up my sex life where I left off. since then its become basic routine to test positive for STD's like almost every 3 months. i do not care anymore about it as far they can being treated (Chlamydia, Gonorrhea, Syphilis etc)