hi i was diagnosed with l4 l5 si bulging disc for 6 years, i just left the urgent clinic with severe pain when rotating. doctor said inflammation in my facet joint in my thoracic spine .i was given a inflammation injection.pain is gone but i have severe bloating constipation inability to hold urine and it feels and looks like im 3 months pregnant. (not pregnant had a hysterectomy) i also have been experiencing some tingling on theright side of lumbar disc bulge. which is predominately where most of my problems occur, i was saved money for mri and now finding out i need lumbar and thoracic mri. cant afford both which one should i get first?