okay so i’m 20F, a healthy person physically but mentally i have th worst health anxiety ever. around 5 months ago i found a lump deep into my armpit, i went to the doctors and she sent me for a mammogram. the lady checked me before the mammogram and said she is not worried about the lump because it didn’t change the whole time it was there. it is still here. i recently have discovered a small lump in my neck, definitely feels like a lymph node as it isn’t rock solid but definitely isn’t soft. i cant stop worrying. it’s only be a couple days so want to leave it to see if it goes down, however i may book a doctors appointment. for the armpit lump, i had blood tests done and everything was good - apart from low vitamin D and low iron which i have now sorted through vitamins. apart from that all my levels were good. 

can anyone give me some advice or reassurance?