Hello, I have gone through your query and understood your concern. The origin of your present complaint dates to the time of your sonogram. Your symptoms do suggest a fungal vaginitis. This has perhaps been caused by the instrumentation you had during the sonogram or improper cleaning later on. You should immediately see your health care provider, get a proper examination and initiate treatment to control the infection. Vaginal medication is preferable since you are in the early stages of pregnancy and anti-fungal medications are not advisable orally. Do not douche or use strong soap solutions; use lukewarm water to clean the genital region. Hope this helps.