Pain while walking!!

Maria • I`m happily married, & I am a new mommy to a beautiful baby boy & with my new little girl. My life is now complete 💚💜
I started to notice that every time i go for my daily walk, my baby starts to move to my right side and stays there until I stop walking. I tried to walk slower but then I get really bad cramps, I can't even make it around the block without him jabbing me really hard. I am 34 weeks pregnant if that helps. I just don't know what to do anymore. I tried to drink water to see if that helps but it doesn't, I tried to rub my right side to see if he moves but he doesn't.