It started with high Hcg...

14dpo, my hcg was 382, 2 days later it rose to 863. All within the 4 week range, but waaay higher than my last pregnancy (which ended in a MMC). Today, at 7w1d, we had our first (private) scan to ease my mind. Miscarriage makes you psycho, so I just wanted reassurance. Anyhoo, in goes Wanda, and ta-da, two sacs. One was very clear, top sac, and had a HR of 138. The other miracle, bottom sac, was up against the side, difficult to see, but doc didn't seem to struggle and got a HR of 153. I am in such shock, Wow!!! Can you guys tell from these scans what type of twins they are? Also, any gender predictions??? I'm soooo in love