Weird symptoms 🤔

I’m 14 and I’d say pretty healthy, I drink plenty of water, eat moderately well and exercise but I keep getting these weird symptoms a couple times a month. Usually a mixture or vertigo, chest pains and a weird feeling I can’t describe, like disassociation almost, I can’t focus at all or see 100% when I get it. Also I have anxiety and pmdd and take medication for my pmdd, but I get this even when I’m off my medication (I take them every 2 weeks) I’m so confused!