As Dr. Lisa Masterson heads into the second season of The Doctors, she tells Rachael what makes her most proud of the hit show. "How much we actually helped people," Dr. Lisa explains, "and that what we were doing was really cutting edge. We're actually able to help people right on the stage - we have a procedure room, an exam room and we also help people around the world ... we're in people's living rooms, giving them medical information, education, and ways to just open up. I mean, the viewers are really part of our show and that's important."

And now a few of Rachael's audience members are getting the answers they've wanted to hear about sex but been too embarrassed to ask!

Q: I recently finished nursing my third child, and I have very little sensation left in my nipples. I used to enjoy that form of intimacy. Is it my age? The breast feeding? Is it gone forever?

Dr. Lisa: "All that chewing and gnawing builds up a callous on the nipple. Once you stop breast feeding, all those nerves will start to grow back. We all get aroused in different areas, and if you don't feel anything there and that's one of your big erogenous zones, that can really decrease your self-image. But don't worry, it'll come back."

Q: After having my second child, my body is no longer what it used to be. My libido has definitely changed. Behind closed doors, I find it very hard to become aroused; sometimes it takes upwards of 45 minutes. Is there anything that I can do or my husband and I can do together to help speed things up?

Dr. Lisa: "The beautiful thing with libido is that it can come back. You have to look at your partner, your self-image, how you look at your body ... all that goes into how you feel about sex. It would be great if we had a little blue pill just like the guys, but we're a little bit more complicated. Talk with your doctor and get a good exam to make sure there isn't anything that needs to be fixed because sometimes there does need to be a little mommy makeover afterwards. But you should be able to go back to normal, and that's the beautiful thing."

Q: During the act, sometimes it makes noise down there, so it's frustrating because sometimes I want to stop and laugh because it's embarrassing. Is there any way to stop that?

Dr. Lisa: "Just laugh - everybody has that! Some people more than others, because sometimes things change; again, after giving birth things can get a little bit more lax down there. What's happening is that air is getting caught in the vaginal bulb because it's a muscle. There are different names for it: vaginal farts, varts, queefing ... just knowing that it has all these names tells you that it happens to everyone at some point in time or other during sex. Just laugh, be comfortable and have fun!"

Q: I like to keep things fun and interesting in the bedroom, but one position in particular is kind of painful: the position you take when you're "scrubbing the floor." Sometimes it's really painful, especially if my partner is well-endowed.

Dr. Lisa: "The important thing about sex is enjoying it - it's a big part of your self image, your well-being. So if it hurts, don't do it. It could just be that your anatomy is making it hurt. One size does not fit all in the male department, so that position may not work that well for you two. The whole thing is about it being fun, being comfortable, and being pleasurable so don't do it, or use more lubrication if it's something that he really likes to do. But if it hurts, you may actually get abrasions or you may traumatize yourself, so your body is telling you something and you've got to listen to it."

Watch more of Dr. Lisa weekdays on The Doctors.