Help!!! Please help

Ar
I'm 22 weeks on mOnday, since last night around 11pm I've been having heavy mentrual cramps lower abdomen to pelvic bone and in the morning I went to emergency to see what was going on. But they checked baby and said she was fine but we're not able to tell me why I'm cramping non stop. I can't be mobile now so I don't know what to do. 
I've officially have been cramping for about a little over 12 hrs and I want this pain to go away...  I won't see my normal doc till Monday in the late day. 
This is my second child 
Anyone went through something like this or knows what's going on?????   

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors