Hi, I have just had to put my ds who is 5 mont...

Hi, I have just had to put my ds who is 5 months on formula as he wasnt gaining enough weight and although my boobs arent filling up as much they are still filling up and i just dont know what to do...........? they are becoming hard and sore but bareable and i dont know whether i should be going to doctor or do i just have to deal with it............ im worried about mastitis and all that nasty stuff.... any advice would be greatly appreciated, i just dont know what to do.........do they they just keep filling up or will they start to go back to normal???????