I hate to be the bearer of bad news, but passing a human head through your body does stretch things out a bit "down there". I can't speak for all moms, but the ones that I'm friends with all say it doesn't ever go back exactly like it was. In fact, even when we got back to our pre-preggo weight, our hips were a little wider and our clothes didn't fit the way they used to. And it doesn't seem to matter which method of birth was used, things just change.
Now for the good news, my friends and I all feel pretty proud of our bodies for making our beautiful children and our husbands still seem pretty smitten with us (even with our wider hips!). But I know that's small consolation when you've discovered that your body has changed in ways that don't please you.
I do have to add, one of my friends had a very bad episiotomy and the doctor did a bad job of stitching her back up, so she had pain during sex and when she looked down there, she was pretty horrified by the scarring. When she had her 2nd baby, the new doctor fixed the old botched job by stitching her correctly (and evenly) and also made a few extra stitches so she would feel "tighter" during sex. Maybe that's something for you to consider if you're going to have another baby?
Oh, and one more thing, you did what was best for you and your baby by having a vaginal birth!! C-sections ARE major surgery and, (in MY OWN opinion), should only be performed when medically necessary!