Pain in lower right side of back 17 weeks

Amanda • I`m going through a separation. I have a 5 yr old. Had one ectopic pregnancy back in December. Pregnant with baby #2!!
I woke up this morning in pain. Its not siatica nerve pain , but I also didn't do anything to hurt my back or leg. It hurts when I lean forward. Feels like I need to pop it, but I'm not gonna try that. Anyone else felt this ?? I'm hurting and just tired of not being able to enjoy my pregnancy. Every week, there's something new