To much weight gain of twins?

Kristina • 3 early miscarriages. 1 stillborn to a baby boy in, momma to a baby girl & ttc ❤️
I honestly haven't been eating as much as before because all I do is bring it all back up. I was never a skinny girl but never the largest. I have twins on both sides of my family and also am a little taller and in the higher weight class which brings a little bit more of a chance of having twins. I need some foresight. 
Forgot to mention up there... I'm almost 9 weeks.

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