Back pain so bad I can’t stand up straight

I went to pick my 4 yr old up yesterday and caused my back to pop and couldn’t walk normal afterwards. The pain is only when standing and walking and I can’t stand straight up so there’s a lot of excess weight on my back. The pain radiates up in between my shoulders down to right above my tail bone. I have to take breaks frequently by sitting down and waiting for the pain to subside and then go again. Today I had 3 different urges for like diarrhea poop and nothing came out.. I don’t think I’m backed up because I had a bowl movement this morning. I’m fairly positive that the babies head is down now because I can feel her head on my pelvis. So I have these pictures one is today and the other is 16 days ago my belly is noticeably saggier 😔 I have been hunched over like a grandma for over 24 hours now, I’m tempted to go to the hospital, I saw my obgyn yesterday they said sorry sounds tough, and only listened to her heart beat. 😭 I’m in a lot of pain hopefully tomorrow I can try a chiropractor and see what they say