Please help, need Ramzi Theory Gender guess!!!

Hello! I'm new to this. Been lurking for a couple months. Am currently 16 weeks. I have an ultrasound from 8 weeks and one from 12 weeks. 8 week ultrasound done trans vaginal. Lower body isn't shown well so no nub shots, but heart beat has been low and high. Heart beat was 156 at 8 weeks, 170 at 12 weeks, 150 at 15 weeks. Was on the HE diet a month or 2 months prior to conceiving. Also took supplements from ttc boy thread. Forehead, chest, and back broke out in first trimester, but have always had bad skin when not on prescription facial meds. Gut feeling it's a boy, but would be nice to have any kind of confirmation! 8 week ultrasound looks like their on the top right side. Craving carbs mostly!Attachment 17713Attachment 17714
Any guesses on skull theory?

I think boy

Skull looks kinda boy

Not a clue with Ramzi as the 3rd picture is too small. IF the gestational sac is to the right and it is a transvaginal I would say boy, but I am not sure that is a sac.
The other two I can't see the nub, but think it is a girlie skull and a very cute profile, cute baby regardless of gender, congrats!

did you find out the gender