Metformin stomach issues- help/suggestions?

I've been on this medicine since Jan 15, 2015. I take it 3x times a day with food. I have some unpleasant side effects. I've gotten past the horrible upset stomach. 
What I've been dealing with lately is feeling like the pill is stuck in my throat. It doesn't happen until about 10 mins after taking the medicine. It doesn't matter if I drink a whole 8 oz glass of water. Since I take the medicine 3x a day, I have this feeling all day long. 
Does anyone know how to make this side effect go away? I'd rather have the diherra back, at least that only last 10 minutes.