Allergy to prescription

Well here I sit feeling quite sorry for myself because I am unwell. Last night I had to get my friend Janelle to cart me off to hospital. What started off as a sore lower back turned into a very scary night. Last tuesday I started experiencing lower back pain, which I didnt think to much of. I had some anti-inflamatories so just thought I would take them for a few days. However come Monday this week the pain wasnt subsiding and I was starting to take panadol as well but nothing seemed to work. So off I went to the doctor who prescribed slow release tramadol. At the pharmacy the pharmasist asked if I had taken these drugs before and as I had not he warned me they could have side effects of vomitting etc. If any symptoms produced I should stop taking and see the doctor. Me being me who never has a reaction to anything took a pill at 9.30 am and went back to work. By 11.30 am I was feeling drousy and a bit strange so took myself home and spent the next 4 hours on the couch unable to wake myself from a deep sleep. Next started the vomitting, the later the day the worse I felt so off to the hospital I went. The hospital staff took my pulse and it was 42 beats per minute instead of 60 to 100...so next the ECG, bloods etc and an over night stay in hospital. Everytime I would nod off to sleep my pulse would go done even further to 38 beats per minute. My heart appears to be fine but I have to travel to Alice Springs to see the specialist just to be safe.I will never take a prescription again without cross examining the doctor. Appartently he could have prescribed a 4 hour dose of the same medication to see if I was going to have a reaction. PS the good news!!! No back pain for 24 hours. Its back now but I think I will just suffer it