How to lose weight?

And is there a possibility of GERD medicines causing bloating?

Just cut back your food a little, get whatever small amount of exercise you can. Don't do anything you can't do for a long time, into the foreseeable future. So many people go on a short term diet, then gain the weight back when the diet ends. Don't do that.

I think replacing tea with lemon grass is also good for weight loss along with other measures.

I did it by stopping eating chocolate, cakes and anything sweet unless it was a special occasion or someone had made an effort like buying or making a cake.

Cutting right back on alcohol.

Eating a little less than usual at every meal.

Having nuts as snacks, no muffins etc.

Exercise a little more than normal. Take the stairs etc.

So, nothing that's lifechanging, just things that make you burn more than you use.