It's normal because of the increased blood flow, but if you are concerned have your doc check at your next appointment. It will go back to normal after you have the baby, but until then it will probably get bigger because of the pressure+extra blood.
Is it the Vagina itself or the outer Labia? Either way, you might want to have your doctor check it out.
Becasue of the increased blood flow during pregnacy its very likely that this is what the swelling is from... its actually a very common complaint but like everything to do with the pregnancy run it by your Dr at your next visit :)
Check with a mirror to see if it's changed color. It should be turning a blue or even a touch of purple. The reason is increased blood flow.
No, no sex. And I'm 21 weeks.
Have you had sex recently?