hello , welcome to HCM,
as per the details u have given,
being a professional doctor, we dont advise any body to lose weight in a short duration ..becoz it will affect the body organs a lot and at same time recurrence of weight gain is possible..
so i advise you to consult a dietician and physical therapist to give advise on food and the types of excercise to reduce your over weight..
mean while i also advise you to consult a gynaecologist to get an pelvic sonogram to confirm any PCOD
problem as becoz u are geeting married..