What should I do..

So I’ve been sleeping pretty good throughout the night until 3 days ago. I’ve been having A LOT of pressure in my stomach and A LOT of back pain. I’ve been having “lightening crotch” every once in a while. But it’s mostly the pressure that is bothering me. I have a doctors appointment Monday at 2:15. But I work 10 hour shifts Thursday and Friday and sitting at the desk is so uncomfortable with all this pressure. Should I call my doctor and let them know how I’m feeling? I’m also just scared something may be wrong I’m waiting on my blood work to come back but I may have gestational diabetes and my hands are very swollen.