Lost my baby and it’s physically exhausting

I miscarried my first today and it was the most physically taxing event I’ve ever gone through. I didn’t expect to be so weak and unable to even walk much. I couldn’t get out of bed,I lost so much blood. I wasn’t even tired- I was just physically so weak I felt like my body was shutting down. I’m not sure if this is due to advanced age at 34, but with my terrible response to the physical exhaustion of miscarriage I’m concerned I won’t be able to handle a live birth and end up passing away afterwards from the exertion. Has anyone else felt incredibly weak after a miscarriage but been fine for a live birth? Or do most feel okay after a miscarriage- able to walk but some pain? I want to know if I’m too old to handle pregnancy. Do younger people handle miscarriages better?