Thanks everyone its a boy
Go visit your ob or midwife and ask them what they think,they will most likely do you a sample and maybe a swab (depending) and see what's going on, I got that at one point and I had strep B and UTIs and preeclampsya but as far as I know it was not related to the latter. Best to be safe and have it checked. Congratulations by the way,boy or girl? I'm 27 weeks with a boy,I already have a 15 month old girl also :-)
Have you taken your glucose test? Gestational diabetes can change smell and appearance too.
You could be dehydrated? Try to drink more water :)