After having sex with this new guy for the second time (haven’t slept with anyone in over a year) I got a yeast infection. I’ve gotten them before so I know that’s exactly what it was. But now, it’s been like 3-4, had my period and I’m still having lots of discharge but it’s yellowish? I’m freaking out if it could be an STI. I’ve never had one and I’m getting scared. I have already talked to the guy and he says he’s clear, he got checked before we even slept together.