Side stitch or gallbladder

reederx5

I have been exercising (walking/eliptical) for the past 2-3 months. Last Thursday I noticed I had a sharp pain in my upper right quad almost as soon as I started walking 3.5mph on the treadmill. Thought it was odd because I have had side stiches before but usually when I first start exercising. I have been exercising for a while. I had it several more times. The same thing happened yesterday and even this morning just walking down the hall at work my side hurts. I have not done anything to pull a muscle. Anyone else ever have this happen? I just push through and walk 2 miles anyway. Hoping this leaves soon.