Weight and body

Rio

I’m 15 and I gained a lot of weight in the recent summers, I did weigh about 70 then I hit a mini growth spurt which got me to 4’9 height which I am now. Last time I checked I was 130 or 127 pounds. What’s the regular weight for a 15 yr old 4’9 height? And when during the day should I weigh myself? Btw I’m also diagnosed with hypothyroidism, which might be a reason why I gained so much weight so fast. But I do live with my grandma and she feeds me too much, you know how grandmas are😂