The hormones in oral contraceptive pills may cause side effects in some people. But this doesn’t happen to everyone — many people use the pill with no problems. 
 
After starting the pill, some people may have: 
  • Headaches 
  • Nausea
  • Sore breasts
  • Changes in your periods (early, late, or stopping altogether while on the pill)
  • Spotting (bleeding between periods or brown discharge)
 
These side effects usually go away in 2-3 months. So if you just started the pill and you have side effects that bother you, try to stick it out and give your body a chance to adjust to the hormones. 
 
If you still do not like the way the pill makes you feel after a few months, see your doctor. They may suggest another brand of pill or a different contraceptive method. Some people try a few different types of pills before finding the right one for them.