Help! Lower left sided back pain

Amy
Hey everyone,
So before I went to bed last night I had a bit of a back ache, usual pregnancy stuff, however I wasn't able to sleep much as the pain seemed to be getting worse. I am now wide awake and in so much pain, I'd like to think I was quite good with pain but this has reduced me to tears. I'm currently sitting up in bed if I try and lay down or lay back the pain is extremely bad. I am 15Weeks. Don't really know if this is normal?! Any suggestions? Tia