If im on the combination pill, and threw up right 1hr and 50 min after the pill am i protected? how long does it take for it digest ?

You probably should be after two hours or at least some of it should have been absorbed. Would continue taking the pills and not stop going forward.

If you vomited one hour and 50minutes after taking the pill, you should have absorbed the active ingredients already. You should be protected, but you should continue taking the medication. If your vomiting persists, see your doctor and use alternative forms of contraception in the meantime. Good luck.