FYI my grandmother died of lymphoma, she has a lump in her leg that she told her doctor about several times, and he said oh its nothing to worry about...
well finally she said ITS REALLY BOTHERING ME being there can you just remove it?
and when they did they found she had stage 4 lymphoma...and she passed away one month later-- after having a reaction to methotrexate-and suffering a stroke...

you can never be too careful! she knew about the lump and told her doctors for 3 years and they did NOTHING... and now shes gone.

(
good luck-
Annabelle