Suggest Treatment For Lump In My Throat

I am a 38 year old mom of 3 boys. I am aprox. 174 lbs and 5'4". I have a family history of several types of cancer. I found a small lump in my throat on the right side a few months ago. Never thought about it because it didnt bother me. I noticed it starting to get larger (about the size of a walnut now) and my lymph nodes on the right side of my neck starting from the center of my neck in front wrapping around to the center of the back of my neck. also i have 2 small lumps in my groin area. I went to my doctor this wednesday and she took an ekg which she said wasnt the same as last years and sent me immediately for a chest xray and ultrasound of my neck. i also made an appointment with an ENT whom I saw today and did bloodwork yesterday. The ENT checked my vocal chords and they were fine, but my right tonsil and adnoid are swollen and red. He also noticed my swollen lymph nodes. He suspects its just tonsilitis and put me on amoxicilian for 10 days, but had me schedule a ct scan and biopsy on my neck. i called my primary doctor about an hour ago to get the results from my bloodwork. The receptionist said the dr would be calling me soon and i should have family around. I am concerned that this could be cancer. i am a smoker...about a pack a day, have lost over 25 pounds since the last week of april, have very sweaty palms, slight fever and strange itchy skin. i havent heard from my primary doctor yet...and its Friday. Is this something I should be very concerned about? Does this sound like cancer>