Hi. I am a 33 year old male, I take alli for dieting, and recently finished my 3rd round of abx after a tooth extraction. The pain is gone, but I have felt weak for weeks now, and I have a fever and chills EVERY NIGHT. Also, before my extraction, an ER CT scan showed a 3cm growth/abscess in my neck, but neither myself nor my dentist could feel or see it, so we just did the 3 rounds of antibiotics. (im uninsured, so I think he just didn't care) . Should I be worried?