Hello I share your concern. White vaginal discharge might be related to infection like Candida/yeast infection or bacterial vaginosis. I would advise you for a battry of tests like Urine culture and vaginal swab culture as well as KOH fixation test to find out the underlying cause and subsequently its treatment. You may require a course of antifungal or antibiotics either oral tablets or vaginal pessaries. As far as pregnancy is concerned which is very much possible with unprotected sex which can be ruled out by urine pregnancy card test or transvaginal ultrasound. Meanwhile drink plenty of fluids 3 to 4 liters a day and maintain good hygiene. Hope I could answer your question, please do let me know if you have any more queries, I will gladly answer you. Best wishes