Before i miscarried my ultrasound read: gest sac: 29 mm 8w 0d crl: 4 mm 6w 1d +/- 0w 4d could i have a complete molar pregnancy? or is only partial an option? my gestational sac was measuring large and a crown rump length was measured.

Hard to answer: Ultrasound features – Partial moles are often indistinguishable from complete moles on ultrasound. However, demonstration of fetal parts favors the diagnosis of a partial mole. Histological analysis of the aborted tissue is usually helpful in confirming the definite diagnosis. Your case demonstrates significantly enlarged sac which may happen with any molar pregnancy.