Back Pain Forum - Awaiting Mri...

My back pain started almost 3 weeks ago...I have been in and out of my drs office and the er 6x's since then...I am in so much pain I cant handle it..It is so horrible I cannot sleep at night...I wish I knew what was wrong with me...I am having an mri done but I cannot get in until next wednesday and I am so anxious to find out what is wrong...My dr kept telling me it was a pulled muscle...I have had pulled muscles and they never hurt this bad for this long...Then they checked for infection...None...He tried to push me out the door again yesterday telling me its a muscle...But I stood my ground and told him I do not think that is what it is...And he finally scheduled me an mri...

History-
--i did have a baby 4 months ago by emergency c-section...I had a spinal...They were kind of leaning towards that being the cause of my pain...But he thinks the pain would have started before now so he kind of checked that off...
--i have a history of pulling muscles in my back...Most likely from my line of work...I do a lot of bending,twisting,lifting,walking while carrying heavy objects,etc...So they were leaning toward another pulled muscle...But this pain is so much different (and much more intense) than it was any time I had a pulled muscle and the pain has lasted a lot longer...
--my mom has a condition with her back...So did my grandfather...I cannot think of what it is called...But I think it is degenerative disc disease? But I am not certain...But I know it is some sort of disc disease...
--i had an xray done last week that came back normal...

Symptoms-
--burning pain in mid-low back...I wouldnt say its my lower back...But just above it...
--pain radiates all throughout my back...Depending on how I am sitting or lying...
--i had one episode of sharp stomach and buttock pain on my right side when I was laying a certain way...
--my back feels "fatigued"
--when I lean forawrd the pain gets worse...
--if I lay on my side and have my husband lean his weight against my back it takes some of the pressure off...
--if I sit in a hard back chair with my back rolled and I push into the back of the chair it takes some of the pressure off...
--when I stand up to walk my spine cracks and pops and feels like it is re-aligning itself...
--walking takes some pressure off...But if I walk too long at a time it starts hurting worse...

Medications-
--anaprox-- I stopped taking these because they were making my stomach hurt really bad...
--flexeril-- they werent doing anything but making me too tired...I have a 4 month old baby to care for...I cant be sleepy all the time! So I stopped taking these too...
--motrin 800-- I take 2 a day...I dont know how much good they are doing because I am still in a lot of pain...
--percocet-- the only way I can sleep at night is if I take 2 of these before bed...I can still feel the pain through them...But I can fall asleep so id say they are working...
--vicodin-- I take 2 of these throughout the day...Starting when I 1st get up...I hurt from the minute I wake up to the minute I go to bed...I can feel the pain through these too but I can tolerate it at least...

I just dont get how I can still feel the pain through these medications...I usually have such a low threshold for pain medications...I had knee surgery last year and only took darvocet afterward because the percocet was way too much for me...But with this back pain it is like nothing gives me relief! I am so exhausted and I just want to be pain free!

Other-
-i am off work so I havent been doing too much activity...
-i do carry my baby around a lot and pick him up out of his crib,swing,bath,etc...

So yeah...I do not see why the pain isnt at least subsiding some...If anything it just seems to be getting worse!

I guess I should add that I am not overweight and I young,active and in shape and I am not heavy at the top...So I just dont know...

Anyone have any ideas of what this sounds like?
Any advice for other forms of pain management?

Thanks for reading this...And thanks in advance for any replies!