I Am Having Symptoms Of Lymphoma -- Itching, Night Sweats,

I am having symptoms of lymphoma -- itching, night sweats, fatigue, shortness of breath, weight loss, itchiness. However, I have no lump that I can detect. I experienced hyperthyroidism a few years ago and had somewhat the same symptoms (that's what I thought it was initially), but my thyroid reset and I was fine. I am a 75-year-old woman in excellent health, active everyday, healthy diet (I've been a vegetarian for 40 years). What do you think? YYYY@YYYY