Spasm

18 I finally had a natural erection after 2 weeks, but I was just gonna let it pass without touching or messing with it. But I ended up straining a little while hard and I bent over to pick something up and had a spasm, (kind of felt like when you get gas but it was focused in the pelvic area) my erection started going away afterwards, and ofc my anxiety shot up. I went to go sit down on the couch maybe a few hours later and had the spasm again even without the erection. Now I have a constant pressure feeling down in my pelvic area. Any advice? Ive been having pelvic floor issues for 2 weeks. But never had a spasm till today. I worry it's gonna cause permanent damage especially since I'm 18 I worry so much.