I know its your choice who you want looking at your body, but the fact is that birth control is something that is prescribed, and that is for specific reasons. If birth control is safe for anyone at any time it would be something available over the counter.
Saying that is the equivelent to saying you feel sad and your friend has anti depressants and you think its okay to take them.
You don't know what dose is right for you. You don't know if your blood pressure is okay for you to be taking it. You don't know if you are in the correct health.
It may seem scary, but you really need to get your body checked out, ESPECIALLY if you are sexually active. Would you prefer have a woman look at your body and feel uncomfortable for five minutes, or would you rather find out five years down the road that you have cervical or breast cancer and were too scared to find it in its early stages and have to deal with doctors for many many more years?
Please do yourself and your body a favor and get checked just so you can know you are healthy and all is well.