This may seem gross but I need help please

So I'm itchy down there, not all the time, and it's like only the clitoris area. I'm not sure if it's from the condom I used on my toy that irritated the area and caused to itch or what. I got tested not to long ago and it was all negative - and only been with one person afterwards & he's only been with me. It just recently started and I've been with the same guy for over 4 months. And no one really before him (when I get my test done) like I said it comes and goes it's not consent and it only happens a few times a day. I looked in the mirror and did NOT see any bumps or anything no redness as well. Anyone experienced this and found out what it was???