Girlfriend. Aunt Flo. Do'a Rosa. That time of the month. Being on the rag. The curse. Monthlies. Womanly time. George. You might have a different name for it, but all of these words mean the same thing: your period. And the number of nicknames you can make up for your period is nothing compared to the number of ways you can feel about it. You may wonder if you're the only girl you know who doesn't have her period. Or you may feel excited about growing...