My new doctor switched my birth control with out telling me . It has the same amount of hormones as the other one only difference is the brand . Both has norgestimate ethinyl estradiol 0.18 mg/0.035mg,0.215mg/0.035mg and 0.25 mg / 0.035 . No difference in what they contain exactly alike besides brand name . I shouldn't be having any side effects if I never had them before right ? It doesn't make sense why I've been nauseous , exhausted , breast tenderness , mild cramp etc . I've never had reaction to any other birth control . And this is same combo pill I was taking .. I missed few pills on accident throughout the cycle and didn't know to back it up the next day . I also switched from taking it in the morning half way through the pills Bc I kept missing them in the morning from accidently sleeping in . I had sex throughout the month . Any possibility I could be pregnant ? I'm married so I'm not always strict on taking it because if it happens it's not big deal to us . But I'm not actively trying either . My period is due in two days waiting it out . Should I test day before or wait for it to miss ? I feel the chance of pregnacy has to be low if I've been on pill for a year . I missed two and half in a row but that still sounds like it's not very likely .. if it's not that then should I switch to another form of BC if I am feeling side effects ?