Second baby

Anyone else pregnant with their second and struggling? I feel so much more pain now. I think it’s because of lifting and carrying my daughter so much. She just turned 1. I feel good when I lay down and move around but when I hold her I have such aches in my back and my left side. It comes and it goes. I could just be sitting on the couch and I get sharp pain. My hcg levels have doubled appropriately too so everything looks good. I have an ob appOintment this week for a sonogram. It’s to confirm a viable pregnancy. Has anyone else had this happen?