Pain and work

So my hands have been swollen since like 13 weeks but now I'm 30 weeks and my feet are sooo sooo swollen. I work 4-5 days a week and I'm constantly on my feet but tonight I asked 3 other coworkers to come finish my shift bc my feet and legs hurt so bad. No one came in for me. Tonight I got home and my hip started to feel like it was being pinched and I have blisters on my feet. I'm thinking of quitting but we could really use the money... any advice?