sex... but there’s a problem

recently i used scented pads during my period and found that they irritated my skin down there, and now there’s a huge red rash right under the opening and going up the vulva a bit. it’s not bumpy, it’s smooth and doesn’t burn when i pee/wash, but it’s sometimes itchy. me and my boyfriend usually hang out on weekends and sex is often a thing we do. no, he doesn’t use condoms since i’m on the pill. would this rash be a concern for him? like i don’t wanna give him some sort of infection. also, any tips on how i can clear the rash up faster?