PLEASE I NEED HELP.

Ok I am 21, 5'2 and 277 lbs. I have lost 10 pounds already but i am stuck I need to loose weight. My wedding is in 6 months and me and my fiance have been ttc for 9 months and no luck. I feel loosing this weight will help me physically and emotionally plus help me look better for my wedding. I am open to trying any diets or work outs I need help please!