Private part smell

Hi. I need all of ur wise advices. We are trying to conceive, but in these few days, particularly this month only (before didn’t happen), I don’t know why my private part started to have a smell like a bit sour and fishy (when my water came out), which particularly turned off sex for us (only just now). May I know whether any of u experienced this. Is it normal or I should go to see doctor? (I don’t have any itchy or burning feeling like infection). Please give me ur advices.