Lower back pain

I’m about 34 weeks, and this morning I woke up to radiating lower back pain (moreso on my right side of my tailbone). It hasnt gone away yet and it’s at the point where I can’t lay down comfortably. Yesterday my belly was hardening every time I stood up and walked to go use the bathroom or get a drink of water.

This is my first pregnancy, so I’m taking these last weeks one day at a time, and trying to tune in to what my body is doing. Little baby is super active, wiggling and kicking each hour. He seems to take a break for a few minutes before going back to rolling and punching.

Are these perfectly normal things at this stage of pregnancy? I should note that I was on modified bed rest twice last month, due to light spotting in the third tri. But it didn’t happen again after that.