How much I weigh ..:

So I’m 16 weeks pregnant second baby, I weighed myself and calculated BMI, so I weigh 11 and half stone and bmi is just slightly over 25 but I’m classed as overweight for height! 🤣 I have a flab belly but thats it. Basically I’m just wondering would this affect when I start to show as I don’t have a bump I just look like I eat everything at the moment no bloating just rounding at moment