Ohh I wanted to add if it was a yeast infection you'd be itchy and it would uncomfortable.
I had that too yellowish/greenish discharge with no itching or odor. As far as I know it was nothing but I would talk to your doctor tomorrow. I know I did end up having a urinary infection and a yeast infection sometime after seeing the discharge because I never told anybody.
Here's what it says in my pregnancy book:
If the discharge becomes a yellow-green, develops a stronger smell, or your vulva, vagina, and anal region become reddened and painful, particularly when you urinate, tell your prenatal caregivers. They will take some swabs to check for vaginal infection, which left untreated may increase your risk of going into premature labor.
Hope that helps
It very well could be a yeast infection as they are much more common during pregnancy. All of the OTC medications are safe while pregnant. I have taken them at all stages of pregnancy.