Unusual Symptoms...Am I okay?

I just woke up in the middle of he night and when I stand for about a minute, I start to feel an internal burning heat from my chest upwards, then I get nauseous while slowly losing my hearing. I’m 18 yo and I’m currently on my period. Idk why I’m feeling like this out of the blue and I figured I shouldn’t just ignore what’s happening (like I usually do). Anyone ever felt like this? Did you end up going to see your doctor? What was the problem and what was the solution that worked?