TMI but fishy smell?

Currently 31 weeks pregnant and my husband and I had sex last night. This morning I wake up and smell a light fishy smell when I use the bathroom?

Maybe I didn’t wipe myself enough down there after sex, idk? But what could this be? Any at home remedies to get rid of the smell? Or should I just go to the doctor? The smell is veryyyy faint and only smell it when I pee. 🤔😭