empty Sac

Amanda

so i did 2 rounds of IVF and and in the 1st round my dr told me i would be 6 weeks if i got a + pregnancy test, well it turns out i had a uterine polyp so the transfer didnt stick, waited 2 months then did round 2 i got my BFP and another one 2 days later, had my first ultra sound and we saw a sac, .....is it suppos

ed to be empty? i have another ultra sound on Wednesday and im afraid it still might be empty.....anyone else have an empty sac first ultrasound???