Repeated infection - Redness witb pain.

Have been getting an eye infection frequently. This is the 3rd time in the last 6 months. It starts with redness on one side. It aggravates to pain only when I squeeze the eye. If I don't take eye medication, then it starts becoming painful. I haven't had this ever before. The first time, I just took a free consult on Practo and was prescribed antibiotic drops MLobe-LP and an equivalent of Refresh Tears. I put them both for 2-3 days and when it improved, I dropped off the medication. The 2nd time, I self medicated the same drops. Now, since its the 3rd time of recurrence, I wanted to check if its anything to worry, or it may be that the infection is lingering since I didn't put the drops long enough? Could you please prescribe a medication.