Trans V ultrasound

Hello po mommies. Pwede na kaya magpa Transvaginal ultrasound 1 week after contact with husband? Pero before that po delayed napo ako 1 month nagpipills ako and huling inom ko pills is aug. 22 after that hindi nako nagkaron and nagtry ako mag pt 4 times na lahat Negative. Last week we had an unprotected sex. Makikita na kaya pag nagpa tvs ako now?#pleasehelp #advicepls