Anyone can get an std from sleeping with someone, even condoms won’t protect from all std’s

Not all stds show up right away. For instance hpv can go unknown , some people are carriers and never show symptoms but can infect others.. I had a nurse friend get herpes, her fiancée didn’t have breakouts but she did on there honeymoon no less..
He didn’t cheat he had caught it prior to them dating.

You can easily get tested by going to your gym for a check up.