sick? please help

Samantha
I just finished week 1 of my pill pack, I have been taking the same pill for 10 months. This past week I have felt nauseous at night sometimes, and this morning I woke up with stomach pains, I feel fine when I lay down, but standing it hurts. I had my period as normal the week before last. Anyone ever have this? I was anemic before. And I don't always eat right or the right amount. But I need answers! I've never missed a pill in the 10 months and I take them around 9am every day.