Transvaginal ultrasound

Magandang araw po. Tanong ko lang if makikita na ba si baby under 8weeks through transvaginal ultrasound? nirequire po kasi ng ob ko. irregular po ako and base sa last mens date ko 14weeks pregnant na ako but nung nag try si doc na hanapin yung heartbeat ni baby wala pa mahanap so baka under 8 weeks pa lang daw. I have appointment na this monday, pero nagdadalawang isip ako baka d pa makita si baby and need ulit ako mag ultrasound after ilang weeks. please share your thoughts naman po. Maraming salamat ❤ by the way, this is my second pregnancy after 7 years. 2 years TTC and finally binigay na ni God kaya super happy kami and excited ❤❤