Thanks for posting your query.
Thanks for choosing Doctorspring.com
I can understand your concern.
It could be a cyst or milia that when you probably poked must have come out. Tyre hole should heal up slowly. You can apply mupirocin cream on it twice a day for a week. If you see blood or pus coming out of it you need to visit your doctor immediately. If within three to five days, it doesn't start healing, it's best to let your doctor have a look.
Please let me know if you have any queries.