welcome to HCM!
It is good that you have read about and found your symptoms resembling lipoma
It is very much possible that your lump is lipoma.Usually, they don't cause a problem but if close to a nerve
or a bone,then they may cause pain.
my advice is that you must first get a FNAC done its a harmless technique and will give you correct diagnosis.once the diagnosis is made then you can decide whom to consult .
Hope this helps!take care!