Easing anxiety abt STDs

Rori

I had sex with one guy who claimed to be clean but I found out he was a compulsive liar and I'm honestly scared to death that he's not. I haven't had any symptoms outside of my irregular nexplanon bleeding and a funky smell from really old period blood. But I know that a lot of STDs and STIs don't necessarily show symptoms. I'm going to try to get tested soon but I am just so scared. How can I cope with the anxiety?