Such a Worrier :(

Today I had an ultrasound done and the provider said I have no complaints. The baby measured 7 weeks 4 days and had a heart rate of 170bpm. Looking at my pictures I can't help but panic.I keep thinking anything that can will go wrong and asking questions such as; Does the ultrasound look normal? Why can't I see the leg buds very well? Does the baby look like it has anacephaly and they missed it because the head doesn't look round? Anyone have any insight or 8 week ultrasounds to show my baby is just fine. I will love a special needs child regardless but would like to prepare myself early for some happenings.