UPDATE: just had a shower, burned to even have water touch the nipple, also, the one thats sore, that breast seems to have grown larger than the other? I'll put some soap free moisturizer on today (got a 9 hour day at work, so hopefully it will help)
I had that problem.
I put bandaids with neosporin on them on my nipples.
Itching doesnt cause stretch marks. Just make sure you moisturize
If your nipple is itchy it could be because they are growing.
Sometimea they itch, sometimes theyre being stabbed and sometimes, my whole tummy itches. Dont itch!! It causes stretch marks, or if you do, make sure you are all sorts of lathered in cocoa butter