I switched from the generic of Ortho Cyclen to the generic of Lo Estra back in February. I've been taking it almost perfectly rarely missing a pill. Last month my period came about six days late but lasted it's normal time frame. Recently though, I've been exceptionally nauseous after eating. This doesn't happen if I don't take the pill, or haven't taken it yet that day. I do have acid reflux but this isn't the same. Is this a side effect that's just now presenting itself? Or should I be asking a doctor soon about other problems?