Right lower backside PAIN!

Ive been having this pain for 11 days as i remember... It wont go away. I got the history of lower back spine pain but that was long time ago.. Now i cant sit for long, cannot stand for long, cannot bend... It really drives me crazy! I put those muscle ached pad thingy but its still the same. Instead it become more worst day by day. Should i be concern about it? Or just take a rest? Its particularly in the lower RIGHT side of my back. Anyone had this before? 😭