how can you tell if your pregnant
It is pretty much different for everybody. I know that when my best friend was pregnant for the first time, her breast hurt, and she had terrible morning sickness. She said it felt kind of like having the flu, but worse. She would gain weight, and then it would be lost, she slept all the time, and started to crave watermelon, but I am sure the cravings are different for everybody. I think lucky might be right, the best things to do is go visit your doctor. I would suggest your OBGYN.
different changes in your body, weight gain, weight loss, feeling tired, spotting, back, feet and stomach pain, missed period and mood change...basically there are a lot of ways to tell but a good ol' doctor's visit might be best.
Go to planed parethood. they wont tell youre parents. and they are realey nice.
By a test in the drug store, and use it.