Severe Back Spasms

I need some serious advice. I’m seven weeks but I am having very intense back spasms. It feels like any time I try to stand, take a step, or do anything really, my entire lower back seizes up. It’s a really intense pain when it happens. It’s to the point where I can’t even climb into my shower or my bed without wanting to cry, because the spasms are so bad. My doctor said I could take some Tylenol, but has anyone dealt with this? I’ve tried alternating heat/ice and using a pillow between my knees when I sleep to take some pressure off of my back. Does anyone else have any helpful suggestions? I’m willing to try almost anything at this point for some relief.