13w1d scan but measured 11w?

Ra

Had to go in for a scan to check everything is okay with the baby after bleeding. The scan was done transvaginal and the baby was curled up so the doctor could not get a good measure. CRL 3,76cm which is the size of week 11 though according to my last period and ovulation I should be 13w1d. Has this happened to anyone else and how far along were you actually? Also does anyone know what I am looking at in the second picture? 😊