tight hamstrings question

I exercise 6 days a week but have neglected doing a lot of streching for last few years. I now experience constant abdominal,lower back,and leg aching and discomfort. Someone mentioned to me this may be a result of very tight hamstrings. They are very tight, I am unable to touch ground and would fail a standard flexiblity test. Can tight hamstrings really cause lower abdominal throbbing and aching,this whole time I had been persuing gyno issues but tests always came up fine..