I have a cyst (I think) just under my breast, just beneath where bra band goes. Wearing a bra ( even non wired) is v uncomfortable. I've had it for a while - it seems to nearly go then come back again. Have successfully drained it a couple of times. This time I tried, not much came out, and now there is a deep hole in the middle. It v painful to touch. Does it need medical attention? Any tips for seeing it off? Have tried hot flannel, antibiotic cream, lanacane powder and nothing works. Many thanks for any help!