I’m kind of freaking out.

Months ago I had ingrown hair that has turned into a blister and it healed but sometimes it reappears especially when I wear tight underwear eg. Period underwear. I have been tested multiple times before and I had swab tests therefore I am pretty sure it’s not herpes. However, when I was shaving recently, I decided to shave with hair conditioner as I have heard it prevent razor burns, but that was like two days ago and yesterday night I started to have slight burning sensation down there near “the entry”. And it’s freaking me out because I don’t know if I have caught something or I’m developing something and I’m so scared i have an std but it doesn’t burn when I pee. Please someone help ?