That's normal. It is likely just round ligament pain. Just do what you can and rest when you need to and stay hydrated.

while preggy i walked just little bits several times a day because i was walking my dog. he is not part of my life nemore. i had to give him up. but now my daughter got one. we will see if we can keep. doubt it. ne ways. just dont stop. its super good for u. i had a healthy bb thats to those walks. small ones r ok too.