Sore breasts 4 dpo early pregnancy sign?


I have had really sore breasts all day today and several times throughout the day I have had a shooting pain in the side of left breast.

I don't get sore breasts normally so this is quite unusual. Also I swear they have got a bit bigger too.

Is it possible that this is an early sign of pregnancy?

This is our 2nd month of ttc so still on a massively learning curve.