What can this be?

whit🌹 • •••1 toddler and twins •••

This morning was sitting on the floor then layed flat on my back I'm 23 weeks pregnant . But after I got up my whole back been hurting every since and I don't know what to do I took a tylenol but it didn't do nothing ? Pluse also when I sleep I wake up my legs and hips be so sore I can't even get out the bed my husband wake up helping me get up to use the bathroom so what can that be also ?

Please respond because I been in pain every night and this morning my back still