Hi dear it is not healthy and advisable to gain 10 kg weight I an month. Also it depends on the nature of your body how fast it gains the weight.
Next Steps
Take the proper consultation and diet plan to go forward.
Health Tips
have high protein and high caloric foods in diet. dates, jaggery, protein shakes, fruits shakes, moderate amount desi ghee, include potato and rice in your diet regularly, include citrus fruits in diet to absorb more iron, increase green leafy vegetables, beetroot, pomegranate, sprouts etc.