You can get poultices that draw them out...... well, for horses....
I 'm not much use, as I cannot remember if we also used a product - but Animalintex were the poultices, made by Robinsons Helathcare, so maybe there is a human equivalent?
I had one in a very sensitive zone that required an in-patent treatment/surgery. Never as bad again even though riding horses daily, which of course involves friction and possibility for trapped skin that might trigger such things. Now I am on a bike amost days - and the correct underwear (seamless boyshorts) and saddle make a massive difference. First sign, I am off the bike and on the phone to GP for ABs.
(My grandmother would always have advocated for a hot bath, salt water and a sterilised needle.... Make sure you see blood.... Ugh. Very oldschool, of course.)
After the hospital stay, I had a District Nurse visit, and she said that they are a sign you are run-down, so take good care. She also suggested Liver Salts for "cleansing the blood". Not sure I agree with them nowadays as they just seem to increase peeing.
OP - feel free to take NO notice of what I am suggesting, but you have my greatest sympathies, and I hope you can get it all sorted out.