Sore(bump) with black hard tail like projection

Patient: Last night i found a dime sized raosed bump under my brest and it had a black tail like projection that was hard. I poped it and dry pus came out lik cottege cheese. There wer also 3 small black capsule looking things that came out as well. i was wondering if you had any idea wht this might be and if i need to go to my dotor to get i checked