2ww suspected

Hi there i noticed a few months ago my right nipple had become inverted obviously I squeezed to bring it back out as I did i noticed a greenish brown discharge which smelt offensive (gross i know)also when my nipple did come back out I noticed a hole/indentation in the centre of it ..after a few seconds it goes straight back in..I've had a phone consultation and received a letter today saying I'm registered for a 2ww suspected..to be honest I'm scared now and just wondered if anyone as had  or is having the same experience regards susan