I am worried about this bump on my forehead. The more weight I gain the bigger it gets. I've had it for 3 years now. (Photo)

Lipomas are benign fatty tumors that occur underneath the
skin. Most lipomas require surgical removal once they are bothersome. It is
important to make sure that the growth is not something else before assuming it
is a lipoma. There are many other subcutaneous nodules that mimic lipomas in
shape and size. Surgical removal of lipomas is relatively straightforward and
requires meticulous attention to detail. The first stage in improving your condition would be to
schedule a consultation to discuss your options after a complete examination is
made. Raffy Karamanoukian MD FACS

This is most likely a lipoma, which is a benign fatty tumor. These lesions are relatively easy to remove surgically.

This is most likely a harmless fatty growth called a lipoma, but to be sure you should be examined in person by a dermatologist in your area. Best, Dr. Groff