Why do I always get side effects?

[Nikia]

I took the first dose of a new IBS drug this morning. Strangely, my side effects didn't show up right away but when they did, I had about every possible common effect on the sheet I got from the pharmacy and a few that I didn't know about until I looked them up on the internet. I wonder if I should take it tomarrow. I want to get better and don't want to keep telling the doctors that I can't take something after only one dose. With some drugs, such as a few antibiotics, the side effects have lessened after a couple doses. On the other hand, I almost died from a side effect the summer between high school and college.
I seem to get side effects from every perscription drugs with the exception of ones that are really OTC medicine such as Claritin's preescription form and larger OTC doses, birth control pills (although it might be connected with my blood pressure rise), my beta blocker, atenenol, and amoxicillin. Every other drug, I have been sensitive to. If fatigue or dizziness is a side effect, I get it. If nausea is a side effect, I get it.
Am I some freak who can't take medicine? Should I try taking another dose tomarrow morning and hope the effects lessen?