an abnormal smell, its sort of fishy.

Ok this is the first time i have done this so please bare with me! Recently i have started having an abnormal smell, i don't really know how to describe it.. its sort of fishy. I will have a shower and a couple hours later it will start to smell like i haven't had a shower for about a week.. its extremely embarrassing. I recently left my partner of 8 years and have slept with a few guys since but its always been protected.. so im starting to freak out a tad.. i am also abnormally wet down there, i am never dry its just constantly wet and i know that's not normal. Please help me!!!! any advice would be great. Thank you