Weird discharge

So two days ago I saw that I had a discharge which smells really bad and was yellowish.Usually I’m sexually active but I only have sex with a condom and i’ve had sex with only one partner(my current boyfriend)Do you know what would be the reason?I always take a shower and pee after sex and I usually take shower two times a day. I know you are not doctors but I’m just asking for opinios✌🏻