Can I continue to take antibiotics after CO2 laser?

I am 50 yer old Asian man and got the CO2 ultrapulse laser treatment for acne scars on 18 December. The nurse said I should take Doxylin 50mg twice a day for 7 days. But the density seemed much stronger than my previous treatments and there were huge deep scabs on some parts of my face, particularly under my mouth. I continued to take this tablet until day 14. I stopped taking it at that night. I found a couple of big whiteheads under my mouth next morning. Can I continue this tablets?