I've had dry gagging too and I was even sick the other day after no nausea. I just knew I was going to be sick, was, and then felt fine again. Weird! Sometimes when I cough, I cough so hard that it unsettles my stomach and I need to gag. I never had any of this with my son.
I think 16 weeks is the earliest they advise for gender ultrasounds. I'm thinking of getting one at 16 weeks because I'm just too damned impatient! I have a feeling it's another boy, but have nothing to base this feeling on. I'm only thinking it because I would quite like a girl - so I can experience being a mum to a little girl as well as to a little boy. I would not be upset to have another boy as my son is the most precious thing in the world to me and having another little one like him would be beautiful. I still have a slight preference for a girl though. I'd like to find out early on so I can bond with the baby whether it's a girl or a boy. I loved knowing my son's name and being able to picture him from 18 weeks last time. I'll probably get my anatomy scan at 20 weeks, so it's only another 4 weeks to wait if I decide not to have a private gender scan at 16 weeks, but right now, the end of February (16 weeks) feels a hell of a lot closer than the end of March (20 weeks).
About heartbeats, I found this range for normal heartbeats by week:
Age Normal Fetal Heart Rate
5 Weeks (Beginning) 80-85 bpm
5 Weeks starts at 80 and ends at 103 bpm
6 Weeks starts at 103 and ends at 126 bpm
7 Weeks starts at 126 and ends at 149 bpm
8 Weeks starts at 149 and ends at 172 bpm
9 Weeks 155-195 bpm (average 175 bpm)
12 Weeks 120-180 bpm (average 150 bpm)
So Wanababa with a heart rate of 162 at around 10/11 weeks that seems about right for the average. Seems sort of in between 9 and 12 weeks. Their heart rates start slow, climb to peak at 9 weeks and then come down again for 12 weeks. I know the old wives tale says heart rates over 140 (I think?), but because heart rates change, it's one reason why it's not too reliable for gender

could definitely still be a boy! I looked at this chart when I whad my 6+6 ultrasound and the heart rate was 145. That made me hopeful it was a girl as it was the higher end of the scale. Who knows if there's ny truth to these things! (I suspect not)
x