At 7 weeks it is hard to tell. most places wont do a scan until at least 8 wks because of that. but when you go back you will also get to hear the heartbeat so its a good thing.
Don't panic yet, it can be hard to see well so early on. If the due date is not totally accurate you could be even earlier on than you think.
I wouldn't worry, I was able to see and hear baby's heartbeat at 7 weeks, but my midwife was surprised. She said that it's rare to hear it that early with an abdominal ultrasound.
Fanks every1 xx just very strange means my dates are out so fingers crossed all is well in 2weeks xx thank u