Doesn't sound like any yeast infection I've had... Like a previous poster said... It's HORRIBLY itchy.
If you have a question about it, you could go to the Dr, but you could just up your yogurt intake. I'm one of those that has yeast infections if I simply take a bath, use the wrong soap, use the wrong toilet paper (or adult wipe)... You get the idea.
I got excess discharge with both of my pregnancies, but it wasn't an infection. My body just produced more at those times. The other thing... TMI, but my vagina felt like someone just kicked me in it every time I got checked, pap, or after intercourse... So I seemed to always feel like that (specifically towards the end).
The only yeast infection I got while pregnant, my Dr recommended I use the Providone/Iodine douche for only 2 'doses'. One the first night and one the next night. That was the ONLY time I've EVER used any kind of douche... But it did relieve the burning and itchiness.