Vomiting the day after I start birth control?

I was recently prescribed birth control pills and I took my first pill last night at 12am (midnight - it's going to be changed once I go home because I'm in a different time zone). Then, at noon today, I started vomiting, but only three times between 12-2. Is this normal? Has anyone experienced this before? And should I be expecting this for a while during my adjustment to the pill?