What can I do for constipation while pregnant?

I need help and it’s TMI… I am 37 weeks pregnant. I cannot go #2 and haven’t been able to go for a good time now. So I contacted my OB and she gave me dulcolax suppositories and they aren’t working. I’ve done 2 within 72 hours. I’m in pain and so uncomfortable. Mucus is just coming out and I feel intense pressure. What do I do? My OB is closed till the 26th. I’ve tried stool softeners, apple juice, water, all that and I still can’t go! Help!