Upper back ache behind the boobs

Ash

Hi I am 5 weeks along and since Morning my one side of my upper back hurts right behind the boob area .. my greats have been really sore and I am petite but well endowed in the front 🤣

Am I not getting enough support for my heavy boobs ? Or is it something else I should worry about ?

Anyone having similar issues ? Hope it’s just a muscle ache 🤞