Yep i had this! It started week 2 for me too, the macom felt like it was sandpaper against my nipples lol i put little cotton pads over my nipples and it helped. Its only just starting to go away now and i am in week 5 at the moment. I think everyone gets it. its horrible at first but it does ease up. 
How is your healing going apart from that?
take it easy!
x