Chalazion getting bigger, what can I do?

There is a medical and surgical solution for chalazion.  Both covered by health insurances.  Relatively simple procedure to have it removed if medical treatment fails

It most likely needs to be drained which is best done using vertical incision inside the lower eyelid. See following link and video. See an oculoplastic specialist.

I very much advocate starting with a kenalog injection rather than surgical incision and drainage of the chalazia.  The lesion is very sensitive to the kenalog and often just melts away with this treatment avoiding surgery.  Open your mouth and ask about this option.

Thank you for your question. Warm compresses applied to the area, and you probably need a antibiotic eye drop prescription and try that for 10 days. If it does not get better, than you will need to excise the chalazion and would recommend seeing a oculofacial plastic surgeon for this. Best of luck, Dr. Heffernan

Generically speaking, you have several options:
1. Watch and wait, 2. Topical medications, 3. Steroid injection, 4. Incision and curretage. You should discuss with an ophthalmologist/ophthalmic plastic surgeon which option is best for you. Most likely you will undergo a tiny incision with curretage. This should only take a few minutes.

I would start with eyedrop antibiotics and if not better then you may need to excise it by an eye specialist.