Hi
I had a sore red lump under my armpit about a week ago....and it's still there.....when I look in the mirror its got a red surface and still abut sore when I press it ....I think it's gone down abit but it feels hard to me and not soft....and I've read on here if there hard it's a concern im worried I have lymphoma or something....has anyone had this please and last a few weeks