5 Weeks + 4 Days with Period-Like Cramps

I’m 5 weeks and 4 days and I’ve been experiencing cramping a couple times throughout the day for about 3 days. It’s not sharp cramping, but more like a quivering achey feeling in the uterus that makes my stomach feel a little sick. I usually feel this way the day before I start my period. Is this normal?! I’m feeling nervous.