Can baby feel uncomfortable?

I’m 30+4 and I’ve recently noticed that when I lay on my left side, baby goes insane and moves like crazy. If I roll over to my right side, she calms down and seems to go to sleep.

She gets so active when I lay on my left side that I’m worried I’m hurting her or something! like she’s moving so much because she’s in pain or uncomfortable?? Anyone know if this is normal?