What Causes Exhaustion,bloating And Headache?

I am almost 29 years old & a mother of 2. I recently lost a little more than 60 pounds over about a little more than a year. At this point I am 6' & 168 pounds. But I feel worse now than I did then! I was diagnosed with gallstones, but have not yet had my gallbladder removed. I suffer from extreme exhaustion, gas, bloating, aching, bruising, some joint discomfort especially in my shoulders, neck, & wrists, & headaches. I workout 4-5 times a week on average and do not feel at all refreshed or energized, the exhaustion just mounts until I cannot function for a day or two straight and then the cycle begins again? Any idea what it could be? I have seem my MD and they ran blood work which was all normal, but I really feel like something is wrong.