Im a 21 year old Male. its been 2 and a half weeks now that i have had a Lump under my chin. it started of small but graditally got bigger. About 4 days from whhen i noticed it it got really big, the size of half a golf ball id say, it didnt hurt a lot to touch but did hurt to extend my neck up and down. The Lump would change in size during the day from smaller and bigger, especially when i took Advil. i finally went to the doctor on the 4th day and he said it was a Swollen Lympth node and have me a 7 day antibotic, he said it could have been caused by this skin rash/pimple rash i had on my face where i shave. I thought that was a little strange cause i had not heard of this. The Lump started to react to the antibiotics, it got to the size where it was smaller then a penny and felt more like a normal lympth node or gland. When i was done with the antibiotics 2-3 days later it started to come back, and right now it is at the same size it was when i started. Ive gone back to the doctor and i have going for Blood tests, ultra sounds and x-rays in the next couple of days. Other Symptoms that have been occuring is, Extreme Shortness of breath, tightness in chest, sinuses, and occasional fatigue. Even tho the docs do seem to have control of all this by taking tests i am still very concerned of wut is causing this, could it be Hodgkins disease or any other cancers ?? Any help would be appreciated