I'm trying not to worry here and not let my anxiety attack start so just wanting some answers to why I suddenly felt dizzy. I'm worried it's my heart because of course health anxiety is telling me it is that. Even tho I checked my heart rate and it's perfectly normak, But I'm trying to find a logical reason too and the only thing is that I'm on my period and it's my 3rd day i went through my heavy day yesterday so it's not as heavy now but I had to work 2 nights in a row and I slept 2 hours before my first night and then yesterday slept 4 hours and after work I slept maybe 5. I have had dinner today and multivitamin juice but I'm guessing one glass of that is not enough so possibly dehydrated too. So could it just be from my period and exhaustion? I know periods can make you feel exhausted and working two nights in a row and barely sleeping probably didn't help. I do have history of dizziness during my period before even my health anxiety started but usually that would happen from really painful cramps. Once needed to call an ambulance coz I could barely keep awake from the pain and losing blood I was really weak.