Ako lg ba nakaranas nito???

First check up q po kanina and my Ob advice to have a Trans.V ultrasound para malaman yung aging kng ilang weeks na ba. My last mens was Nov. 3-7 2018. So I was expecting that I am 7-8weeks pregnant. pero kanina sa result ng transvaginal ultrasound ko is yung size nya is for 5weeks and 3/7 days pa lg and no heartbeat. The doctor advice to repeat my transvaginal ultrasound after 1-2 weeks. Is it natural lg po ba? Please anyone can answer. Kasi I have a history of misscarriage sa 1st baby ko and sa 2nd baby ko is bedrest ako pero thanks to God nka survive kami and now she's 8 yrs.old.