oh thats fantastic, you must be over the moon.
BTW my midwife tryed to get a heartbeat with mine at 13wks and couldn't find it, so had to go back a week later and got it the, ahe then said that she was concerned when she could find it the first time as it was unusal (bad spelling sorry) not to with someone so slim (her words I'm a normal size 10 not exactly a stick),
so could sound like to could be sitting nicely in trimester 2 lol especially as the uterus in no longer in your pelvis.
xSuzx