Social networks have gotten us to open up a lot. While we're all willing to dish our dirt on Facebook and Twitter, suddenly we get really quiet when it's time to visit our gynecologist. "The doctor's office is the one place where you should feel comfortable discussing anything," says OBGYN and author of "What the Yuck? The Freaky and Fabulous Truth About Your Body," Roshini Raj, MD. Raj broke down five topics we often opt out of discussing with our doctors -- and why we should start talking.