Severe back pain during period

I started my period 3 says ago and I have had immense back pain since. It started the night starting my period. It wasn't until right before going to bed had I noticed it. It's different then the typical back pain my period brings. In fact I've been having that kind of pain in conjunction with this new pain. It feels like I fell off a ladder and flat on my back or something. Over the course of the last 3 days it has gotten much worse and spreading up my back. Before it was just my lower back and now I can feel the pain between my shoulders. It causes me immense pain to get out of bed. I can't bend over or squat down to pick something up. This pain combined with the other back pain and cramps is making me miserable. Ibuprofen isn't helping. is this normal? Is this something other people have experienced on their period or have I just done something to my back?