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"Very Effective if taken right 0.1% failure rate vs other birth control that are not combined pills 0.3- 0.6% failure rate. ( 7 days after first Sunday if starting first pill)
Regulates your periods makes them shorter and lighter. Note: it takes about 3 months for your body to get used to the hormone change so you might experience irregular periods or brown discharge but its completely normal. 
Fact: lower sodium intake if this happens
Helps improve skin. i.e acne but in time. You will not see results right away but in a month or two.
I have not experienced any weight gain but have seen mood swings, sensitivity etc. but improved in a few months.
Every girl experiences Trinessa differently but it's because your body gets used to the change (3 months)."