Disappointed!!!!

I had my first ultrasound today with the expectation that I was 10 weeks (due Nov 8th) went into today and my baby is only measuring 7 weeks 6 days so they moved my due date to November 21st. Is it bad to be kind of devastated that here I thought I could tell my family in 2 weeks and now I have to wait a whole month!!!! Also I thought "Hey only 2ish more weeks of puking my guts out constantly" to sadly no.....I haven't even peaked in morning sickness :( They wouldn't even give me a prescription to control it......ugh here I was so excited for today and now my whole day is just ruined!!!! Did anyone else have their due date moved back that far?