OH MY GOSH, I hope you didn't go out in the sun with only baby oil on.
That said, here is what you have to do. Get some tanning lotion spf 15 or higher. I had 15 on yesterday and got PLENTY of color. Take your TIME getting color- every burn you get before the age of 18 increases your chances of skin cancer. It's the burns before 20 that cause the problems later in life. RE APPLY the 15 sunscreen every hour and a half. Go out in the sun for and hour or two a day and you WILL have a tan in a few weeks.
Please please don't try to do it all at once. My son is WHITE- porcelain white. I put 30 on him all summer and by the end of summer, he is BROWN and his hair is white.
If you want to be tan NOW, go to a self tanning place. Do NOT burn your skin, which is exactly what baby oil will do.