What Are The Side Effects Of Birth Control Tablets?

hi, i m 30, got married last year may 10. i ve taken prevention tablets for 6mths. then i stoped the tablets now i want to get pragnent as since 7mths we r trying i dont knw thats right or not. i ve 25day pms cycle.month by month i m getting very worse pain for 2 or 3days of periods. in this month from start i had quite pain in my abdomen, tummy..my breast also got changed..dont know what was that. but during my pms got very very bad pain.