I am obese and have multiple firm, mostly pea size non-painful nodules under my skin, noticeably on my thighs and abd. I have a larger, softer one on the posterior side of my arm above my elbow which is tender when pressed on which I have had for years and has not notably changed which I believe is a lipoma. Would like to know what the hard nodules are, I have had these for years since I gained so much wt., approx. 100lb over 6 years? Thanks