Side effects of contraceptive pill:
Intermenstrual spotting. Breakthrough vaginal bleeding is common between expected periods. Nausea..Breast tenderness. Headaches and migraine. Weight gain. Mood changes. Missed periods. Decreased libido
Don't worry ,its better to consult doctor.
MD - Obstetrtics & Gynaecology, FCPS, DGO, Diploma of the Faculty of Family Planning (DFFP)
Of course, no one uses like this. It is only emergency contraception.
There are many temporary family planning methods like oral pills, injectable hormones, Intra uterine devices, condoms, diaphragms, safe period, coitus interruptus etc. You must know about success and failure rates of all as well as advantages and dis-advantages of all to decide which suits you the best. May be consult Gynecologist as a couple. You may listen to audio information about family planning.