Overweight and pregnany

Hi, so I might be pregnant again after a few months of having my baby, the problem is Imin the middle of a diet, because I was 180lbs last I checked! And if I were to be pregnant again I’d go up to 200lbs, but even if I were would I still be able to lose a little bit weight or keep the diet til I do find out if I am? Im waiting for another week to test because I suddenly stopped taking birth control after having my baby due to breaking out and gaining more weight, then I was sexually active, unprotected.. so yeah lol not that it’s a bad thing to have another baby, but it is bad for my health.