We both decided if she is pregnant we will keep the baby but what I really need help with is how I am going to tell my Dad and my mom
Congrats on the decision (if she is pregnant), it's going to be a big responsibility so I hope you're readying yourself for it! You just have to be honest and mature about it when you tell your parents. Tell them that you and your girlfriend are going to be responsible, and raise the baby together.
Parents always want what is best for their children first. They also want you do succeed in life. Show them that you are mature enough to make your own decisions (you are an adult anyway) and you still have plans to be successful in life whilst being a father.
Also, relax dude... Your anxiety is going to affect your girlfriend and it will in turn delay her period if she isn't pregnant.
Promise me one thing. If she is pregnant, don't post a question in 9 months asking how to look after a newborn. Spend the next 9 months learning all you can about raising children.
And remember - You're not just having a baby - you're having a whole human, a toddler, a teenager, an adult, the whole shebang ... and you are going to have guide them through it all, not just learn how to change diapers.
why don't you try actually finding out is she's pregnant or not before you go telling everyone that she is. . .
