Fell on butt

I was out shoveling snow bc we got alot of it. And I slipped and fell on my butt. 13w3d. Cramping and feeling nauseous. Should I go to ER or wait til tomorrow and get a visit with OB?

***update***

Baby is fine, no bleeding but still cramping. Gave me iv fluids

Tested me for influenza bc my daughter had and yep i have it now also.

Tested urine, looks fine but is going to culture it.

Er dr called ob said to take 1000mg of tylenol if that doesn't work 400mg of ibuprofen. Says if cramping doesn't go away make an appt this am.

Also has me taking Tamiflu.

Also very bad pains in chest.