Green Vaginal Discharge

So, i went to meet my doctor yesterday because of this discharge. She straight away performed vaginal swab and i really don't like the procedure, its the same like pap smear. I need to wait for 1 week to see whether it is true infection or not before she can prescribe me antibiotics. I hope everything is alright. I am 5w2d today and will have my first ultrasound next wednesday. She told me its too early to do us just yet. Anyone had same problem mind to share?