Sharp aching pain in shin

Jenna

Anyone have any idea what this could be and how to help. It’s to the point I’m near in tears and cannot walk.

Was a dull ache last night and this morning until I knelt down to change my toddlers nappy, now it’s unbearable.

I should add that I am 21 weeks pregnant and where my hand is in the photo is where most of my pain is coming from 😭