Why are my submandibular glands so prominent? ?

I’ve noticed that since I’ve lost weight I can feel and see the two glands on each side under my jaw. They’ve been like this for a few years. They are very pronounced and they make my “double chin” look bigger than what it is, I don’t even have a double chin! I try to do jowl massaged everyday but that doesn’t seem to work. What would you suggest I do to help? (The bump on my neck in the third picture is a scar from surgery I had when I was little) 

2017-04-11T00:37:33.809Z