Random foot pain?

I don’t know if being pregnant has anything to do with it but I’ll I’m 22 weeks and gained about 10lbs so far.. I’m wondering if the weight gain is causing my foot pain? I have just a small spot on the inner side of my foot where one of the bones pops out a little and if I touch it, it’s sooo painful! It started off as just an ache and gradually turned into real pain, it kinda subsided when I sit or lay down but it’s gotten down to almost the whole arch of my foot now🙈 is this from the added weight? I can’t recall bumping or twisting it. Any info would be very appreciated!