it could definitely be an infection..I was once diagnosed with bacterial vaginosis when I was preg...it was very itchy and had a very weird smell to it especially during and after sex with my boyfriend...it could be that. from what I've heard the discharge from yeast infect. is chunky and white like cottage cheese...just go to the dr and get checked out its better to catch it all sooner than later. oh and if u can't get to the dr right away vagisil has that new over the counter test that tells u if u have a yeast inf or something else...its like 19 dollars I think. good luck
Sounds like a infection of some sort, you should have dr. look at you. Good luck!!!