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If you have missed taking 2 or more than 2 active birth control pills, the efficacy gets reduced and you can be at risk of pregnancy (if you are sexually active without protection). If you suspect chances of pregnancy, repeat pregnancy test, and do not start with birth control pill. If you suspect chances of pregnancy, consider visiting your doctor/gynecologist at the earliest for thorough examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately). Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Take adequate rest. Drink plenty of water. Maintain healthy diet.
Take care.