I'm 22 weeks and I'm petite. I guess cause I'm small my stomach is getting big. It's like all the weight of my belly is going to my right leg and it hurts when I walk. Maybe cause I don't rest enough. Sometimes it hurts to walk.
My right knee has been hurting me. It's awful when I have to go up and down stairs. Maybe stretching your leg might help. I stretch, walk, and ride my stationary bike. Strengthening your quads can make a huge difference.