Should I go to the doctor?

Faith

Okay so, today I got my period and it's been a bit different than usual. I've been in the most intense pain I've ever had with cramping, although my bleeding is lighter than usual on my first day, I feel very weak and light headed. I feel so exhausted and within the last hour I've had a pretty bad headache. Should I be worried? My mom seemed a little concerned when I didn't finish my dinner, should I tell her all my other symptoms? I don't want to worry her because she has surgery tomorrow, i just don't know what's going on with my body at the moment and if I should seek medical attention.