Lower abdominal pain

Hi ladies! This is my first pregnancy and im 8 weeks today. Lately I've been feeling a lot of pain like when i used to get my period. But today is worse, on my lower left side abd ... i dont know if thats normal or i should go to the ER, i dont have a doctor's appointment until next week. It hurst when i stand up. Any information will be appreciated.

Thanks!! And good luck to all of u, specially to the new mommies to be!