So confused

Maddie

Alright all! So I had some light bleeding start about a week and a half ago and I think it was my period but I have been feeling super nauseous, my resting heart rate is higher than normal and I have been feeling dizzy and light-headed. What could be going on?! I have almost vomited three times at work tonight (I work in a hospital) while doing stuff that normally isn't gross to me (kinda like a pregnant nose). Could I still be pregnant?