Bottom of my stomach hurts while walking

Bri • Married and mother to babygirl💓

I’m 25 weeks and I was walking in the mall and the bottom of my stomach started to hurt like sharp , sharp pains . It was fine once i sat down, it was only when i was walking which makes me think it’s not contractions or anything . Any idea what it could be ? I have been on the go a lot today running a lot of errands so possibly that could be it ?