Vaginal irritation

Yesterday I woke up with terrible vaginal pain. I went to the bathroom and saw that the area around my vagina is red, itches and it hurts. I don’t believe it is an std because my boyfriend gets blood tested every year and I trust him enough to not cheat. My period is coming next week so I’m wondering if it has to do anything with that? Currently don’t have access to go to a doctor right now and I need help to calm down because I think it’s something bad.