Girls, is it normal that I'm not gaining weight? I had toxemia but it …

Girls, is it normal that I'm not gaining weight? I had toxemia but it wasn't strong, only felt nauseous in the mornings, and always ate meat, but now I can't eat it in any form (but this isn't a problem for me), like maybe because of the meat I'm gaining 1kg then losing 1kg) as if tomorrow will be 16 weeks already, the belly grows, but the weight doesn't) Maybe I should be happy instead?