Pain/Lump under armpit
I am a 27 year old male, 6' 5" and approximately 265 pounds. I currently am taking Citalopram and just finished a round of antibiotics for swollen tonsils.
About a week, or maybe a week and a half ago, I started having random sharp pains in my left armpit. I felt around my armpit and noticed a long lump. Its sore if I press it, and I'm 100% sure that is where the pain is coming from. The lump itself, like I said, is long and feels kind of like it could be a vein or a ligament. I'm also worried that it could be a lymph node. I'm not sure what to do. Thanks!