Would you go to the er?

So I have not been feeling myself I'm 20 weeks pregnant and went to docs with sickness, servere pains front back shoulder, dizziness, cramps, reduced movement etc

Doc said if I feel worse to go to the er, well its been hours and I feel so much worse like my body is ramping up the pains and dizziness especially I've been drinking lots but still swelling.

I have a scan tomorrow but do you think I should still go to the er today?