Hi, I am having some stomach and back pains. I believe they are completely separate problems. I have always had both back and stomach problems. I just recently started taking medicine for acid reflux. I am currently having bad constipation. I have been getting very painful stomach pains that are sudden and short lived. They are very sharp but also feel crampy and I feel the need to pass gas during them. I also noticed I have had spotting in between my periods this month, but I know I am not pregnant because I got my last period and have not had sex since. My back problems have also gotten worse recently. The pain is in my lower back and is brought on after I sit down for a while. After the pain, I experience tingling in my left leg that last for hours. Any response will be very appreciated. Thank you!