Measuring behind

My baby was measuring behind at 19 weeks so they changed my due date from the 22nd to the 28th, but at my last appointment (today) I was measuring ( on my stomach) just about 30 weeks when I am 32 weeks and 2 days. He sent me in for a growth scan and made me go today he sounded very concern but didn’t give me much information . I don’t even know the tech didn’t tell me anything and didn’t give me any pictures (she was very rude). Will they call with the results ? Or if she didn’t say anything does that mean there’s nothing to worry about ? I didn’t do genetic testing and i did the worse thing possible and googled it it could mean Down syndrome??? I’m so confused as anyone had this happen or measured so far behind and everything was okay ? Also the tech did tell me bsby was head down and wouldn’t be surprised that I’m feeling the pressure which I am . Does that mean baby is going to come early ?