Dear whomever would be kind enough to help:
I fell on my knee in September, we neglected to nightly prepp the area with peroxide and antibiotic ointment. We noticed tonight that it is like a 1/2" round pimple raised and a bit hard and my dad feels that it has to be cut off and heal all over. Is there anything we can do at home to remove the blister (so to speak). It is February now.

Please help
Ava

I would recommend cutting it open and let it drain if it doesn't get better in a week or two go to the doctor

After you cut it open clean with peroxide and use bandages with neosporin on them