Can’t walk!

I’m 35 weeks 3 days! I’m a teacher and currently at work. I wake up every morning sore in my legs but I snap out of it after 30 minutes and start to get momentum.

Today, I’m walking and feel pressure under my belly......It’s SO HARD TO WALK! It’s so much pain under my belly every time. And then if I sit for a long time, I get up and am in SO much pain too. What does this mean? Last night I felt baby wiggling like crazy really low. Today, I wake up and am walking at a snails pace the last 4 hours. I thought I would feel better by now. Help : (