could i be pregnate or is it birth control pills?

[tomlolo2006]

Okay im 22. I was on seasonique with no periods until the last pack as supposed to but i started my period 5 days after starting the last row of pills and it only lasted a 3-4 days very light and brown colored with most of the time it was clear discharge so im not sure if this counts as a period.
Now after that last week of seasonique i started on Loestrin24. No periods so far and im only on the 2nd week.
My nipples are REALLY sore, i've been nauseous for a few weeks and thrown up twice (the first time i busted blood vessels all over my face due to the severity of it, im told that happens sometimes espically in pregnacy), i'm really tired, more discharge than usual and i've been breaking out like crazy. I'd like to know if i could be pregnate or just a side effect of the birth control pills. I was only on the seasonique for 3 months, before that it was FemconFe for 2 months, and before that Depo prevera for 3 years. The last time i had a regular period was the two on Femconfe (the minty chewable birth control pills). Please Help!

[WildChild]

The pills mess up your natural body balance. Talk to your care provider about the effects of all this changing. But it will probably take a couple months to get balanced out.