37 week rant

Okay so my ultrasounds have always been normal, baby boy has been growing at the rate he should have been and everything. 3 weeks ago i went in for a scan and still, everything was normal, up until today. Today I had a new ultrasound tech, and she said my baby was measuring in the 6th percentile, that he was small, measuring a month behind and all this crap. She proceeds to ask me if i had high blood pressure with this pregnancy and i told her no and she said how was so sure and i told her i never missed an appointment and they always check my blood pressure and its always normal. So she said maybe they weren't monitoring it good and that I needed to come in weekly. She also asked if dwarfism ran in my family and i said no, i asked her if baby was showing any signs or anything and she said no, it was just a question she had to ask. So when I asked to speak to the dr she got offended and said he wasnt in the office, that he was out delivering babies. So when I asked for the tech I always get she got more mad and said she wasnt in the office and just walked out. Im so upset and confused, im waiting for my ob appointment with my dr on Thursday to see what he says, but meanwhile im just out of it. So many worries are running through my head, but at the same time im going with she doesnt know what she's talking about and its all bullshit. Any mommies went through anything similar?