Horrible cramping and back pain

I’m 31 weeks and have been having bad period like cramping the last few days and back pain. It was so bad last night that it ended up waking me up😅 it also happens when I’m just laying down or sitting on the couch. Did anyone have this happen and be seen? And what ended up happening? I plan on calling the on call doctor when hubby gets home because our daughter isn’t allowed in the office. I don’t remember being in this much pain with my daughter around this time. ETA: been super light headed and out of breathe lately as well. I’ll be walking around the grocery store and start to feel horrible