I just used Milk of Magnesia again for the 3rd time in 2 weeks. I have been having extreme, horrific constipation lately... despite more exercise than usual, replacing wheat cereals with quinoa, and reducing caffeine consumption. These are all things that supposedly should help relieve constipation.. however I can honestly say, I've rarely had such a hard time with bowel movements. I've had easier times going when I was not exercising and when I was eating wheat at every meal. I just don't get it.So tonight, thinking that the Milk of Magnesia would work, I was disappointed to see it only help about half as usual. I knew I had much more to come out, and decided to slowly flex the muscles down there, over and over again--like I've done before in the past--and help it come out slowly. This is different from straining in that I just push for 1-2 seconds, stop, and then repeat again. But usually Milk of Magnesia works so well, I don't have to do this. However, MOM isn't working well with me nowadays.. as mentioned in prior posts, I get this feeling of cloggage in my left abdomen, and when I push, that whole area just spasms and quivers.. like there's something there preventing further movement. It's a brick wall.Here's where it begins for those who can't read the backstory: Eventually after so many "light pushes" but still no more bowel movements, I felt a dull pain in the heart area (left side of my chest.) I then realized I was feeling an alarming lightheaded/numbing sensation all over my body. Then I realized I had mild shortness of breath. It was at that point I put my hand to my chest and felt my heart pumping WELL OVER 100 BPM. My typical resting pulse rate is usually 90 BPM, which some people think is too high, and I do too, but there you have it. Anyhow this was tachychardia... I know, I've had it before. But getting it from a bowel movement? Never had that before!I'm 28/male with no diagnosed health problems. I just went to the doctor 3 months ago about tachychardia I developed sometimes late at night or early in the morning. He took my EKG and it looked fine to him, checked my pulse and BP, all was normal... except pulse rate was 105 when he checked it. But the same day I saw his nurse who found my pulse rate to be 89. So maybe the 105 was White Coat Syndrome. Anyway then he ordered a battery of blood tests.. result? All normal.What do you guys think? Is tachychardia normal when one is trying too long for a bowel movement (I must have spent a total of 2 hours on the toilet tonight, on 2 different occasions, waiting for the damn MOM to work.) ?Should I report this to my doctor? I've been to him for tachychardia before, like I said. He felt it was anxiety-related, which has some truth to it as I do have Generalized Anxiety Disorder. however I would think getting tachychardia during a bowel movement is physiological. But does tachychardia happen to normal people when they "try" too hard to defecate?