Aih, retroverted uterus ni memang boleh buat ultrasound jadi sedikit tricky, tapi jangan worry ya, it's actually quite common! Usually around 8-9 weeks barulah nampak fetus clearly, sometimes sikit lambat from the normal timeline, tapi semua okay je. I'd suggest you check in with your doctor or clinic sebab they can do transvaginal ultrasound kalau perlu, which helps nampak baby dengan lebih jelas even with tilted uterus macam yours.