Hey, im goin on my 5th month on Yasmin, and i've noticed i cry a ...

Hey, im goin on my 5th month on Yasmin, and i've noticed i cry a lot and get frequent head aches.. is this normal? my thing that is worryin me as i have read from a few other's that there period were shorter, and some were longer.. mine used to be 3 days 4 max.. and now ill have it for 7-8 days,it's scary!! i just havent been myself while on these.. but if i stop ill get sick.. im on it bc i had uncontrolable bleeding so this stopped it.. but it makes me feel eh. im tired a lot and i can say that most likely i had IBS and this made this @ times worse.. i cant eat certain food and i feel sick a lot.. plz tell me has anyone else experienced any of this!!!