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If you miss 2 or more than 2 active pills in the pill pack, you no longer remain protected. Any intercourse after that can lead to pregnancy. The symptoms that you have could be due to pregnancy. Be in rest and regular with medications to control blood pressure. Monitor blood pressure regularly. Do not delay your visit to your gynecologist for a thorough examination and blood tests to confirm/rule out pregnancy. Urine pregnancy tests show high incidence of false negative results, so they cannot be relied upon for accuracy.
Take care.