Sore, aches & pains ~ 19 weeks

Curious if anyone else has gotten very sore with aches and pains early in pregnancy. I guess when I say early I'm almost half way.

It started to get nice out where I live so I've been walking to get some exercise and fresh air. It has been 20-45 minute walks, 1.5-3.0 miles - nothing crazy. Casual stroll as well, not talking power walk.

Afterward and in the evening I'm so sore. My lower back hurts, hips, and somewhere in my crotch area. I've started stretching afterward hoping that'll help. I've barely popped yet and gained 8.5 lbs at 19 wks. Is my body this pathetic already? Am the only one?