Question

Okay so I'm 36w6d and this past Tuesday I hurt my back at work (mopping the floor) and since then it seems to to be getting worse I had an appt w my Dr yesterday and she said to take Tylenol but that's not helping at all any suggestions on what I could do to make it feel better I haven't been able to sleep at all the only time I don't hurt is when I lay on my back but I know that's not any good