I have a small knot on the border of my nipple, but my nips are not sore, lactating, or sensitive, and the knot is not sore, could this be pre-gyno? I'm around 15% body fat, so it's hard to tell exactley how big the not is. If you aggregate your nips from over feeling, could that cause a knot? I'm on 150 mg/week of test cyp for Hormone Replacement Therapy (HRT) and have been taking erase, but a week ago I started and epistane cycle and dropped the erase due to epi acting like an Aromatase inhibitor (AI), but when I discovered the knot I started back the erase. If this is pre-gyno, what do I need to do? Would erase or another OTC Aromatase inhibitor (AI) (6oxo, formeron, forma-stanol) be enough, or would I need a RC grade Aromatase inhibitor (AI) or serm? This is my first PH cycle, and still learning, so I would really be thankful for any help and information I can get.