Does Unwanted 72 Pill Cause Dizziness, Fatigue And Abdominal Pain?

I Used Unwanted 72 after 4 hours of Intercourse, got my periods after 6 days or something although I ve menstruated earlier this month. The period lasted 5 days on the last day I began to experience Dizziness, Fatigue, slight stomach pain, n headache this went on for 4 days there about, right now the pains have gone.. Just d stomach pain is yet to relief me. I just wanted to know, if these are the side effects of d tablet n its my first time of using this particular tab usually I use another brand. Also can antibiotics like Ampliclox & Ampicilin be used in place of contraceptives? Also will everything b back to normal later?