hey hun! i had somthing similar happen with my second baby. when theres a breech position or cord around the neck, sometimes docs focus more on checking everything is ok with baby's health rather than the gender part. they probly wanted to make sure all the important stuff was lookin good first you know?
with my friends experience, her dr said when baby is breech its harder to get a clear view of the gender anyway cuz of the positioning. plus if theres any concern like the cord thing, they dont wanna stress you out with too much info all at once.
i'd just ask at ur next appointment! they might be able to tell you then, or maybe schedule another scan when baby hopefully flips around. dont worry too much tho - the breech and cord thing is probly their main focus right now which is actually a good thing :)