Pain and muscle weakness

I am 26 years old, and I have aching pains and muscle weakness and tightning muscles throughout my body, exercise helps though does not cure it at the levels I've done it (5 times a week for an hour, 2 days cardio 3 lifting). After one week breaking from exercise for any reason it worsens dramatically and it is definitely abnormal. I was very naturally athletic up until my 3rd year of college during which time I was on a computer for often 15 hours a day. I woke up one morning with severe muscle pain and have been fighting it ever since. The day before I was riding a bicycle to work every day even racing. I've been to various doctors, I rectified some chiropractic issues which helped, and I've learned a lot along the way and it has gotten progressively better but I seem to have hit a plateau and I know the causes aren't due to inactivity alone. For one I had friends right there along with me and it didn't effect them nearly as much. My brother's are both healthy, and I know of no chronic muscle diseases in my family other than my aunt who has chronic fatigue syndrome (muscle pains are one symptom). I am not with the luxary of solid health insurance yet to get a diagnosis through MRI, unfortunately too I haven't received good advice from MD's I have gone too. One informed me if Advil was helping than to just keep taking it until it wasn't helping anymore! I am not looking for cures to the symptoms, I am trying to be healthy again. Where I can run, and do the things I enjoy without wondering if I'll be too sore to even wrestle with my younger brother or so weak I can't even lift him off from on top of me, or I can not get out of bed fast enough to answer a phone or sit up normally in the morning or sit in a car and get out without having a brother, friend or family member see me awkwardly finding ways to get in and out while I hide my pains. Anyone having ANY information that may help PLEASE let me know. Muscle relaxers, exercise and stretching every day are the reasons I can still walk mostly normally and jog, if awkwardly and with pain. Thank you for hearing my story, I hope you can truly help me.