Good, safe call.
And I'm not saying to base anything at all on this, but, I have never had an ingrown hair to even closely mimic a gyno blossom. The gyno will surround the nipple in most cases. If you have an ingrown hair mimicking that, then damn dude!!!!!!
Do not fuck with the Arimidex until you can get some monitoring going on. Follow Big's words about crashing estrogen and read a few studies on what crashing your estrogen will do to your gains, not to mention all the other internal and psychological problems. Estrogen aint all that bad. But respect it.
I've been a lab rat since 19 fukin 84. You stay in touch with what you administer and abide by what your bloods are telling you. Fall a little behind and you might end up on SSRIs, Anti Epileptics, Heart Meds, and Blood Thinners for the rest of your life. That's when the blood work begins. I'll be quiet now. You just hit home when you were asking the type questions you asked. Good luck buddy!!! And to all my bros!!!!!