I have been having a horrible discomfort and some pain on the lower kind of the middle left side of my back since I was 5 months pregnant.. I thought it was normal due to that I also had back pains from my first child... but I still have it to the point it takes for my husband to put his knee on my spot to relieve it... I know its not a kidney issue I've been checked out for that and have had kidney stones before and rhis is not the same... plz help me!

Sounds like it may be Sciatica. It's the main nerve that runs from your back down your leg to your foot. Thebaby could have damaged it during pregnancy. Do you ever get tingling down your legs or numbness? Thus can also be a sign.Take some anti inflammatory pills or heat spray.