STI/STD

Ok so I've slept with about 4 guys and every single one has been clean. I've gotten tested and so have they. They guy I'm currently with is clean and I am too, I saw the results and everything. But after the last time we had sex I've been itchy but no smells or difference in my discharge. This has happened before and it's been bc I was allergic to my detergent. I'm thinking I put to much fabric softener on my clothes, but I'm overreacting and thinking and I'm very very scared. I need some reassurance... Plz help... But the skin looks raised and irritated and I'm thinking its from me scratching. But idk... Help me plz