Hi. I have been trouble losing weight due to water retention.
So do you have edema or something?  Have you gone to a doctor?
No, I have not gone to the doctor, but I am planing to do so soon.
I went to a bariatric medicine place that deals with weight loss, I bet they could help diagnose something like that. You could also take a diuretic
That sounds like a great idea. 
Have you tried any other lifestyle changes for managing your weight?
Yes, I'm currently going for walks and eating healthier.
Therapeutic Lifestyle Changes
Therapeutic Lifestyle Changes, also known as the TLC Diet, is a dietary pattern recommended by the National Cholesterol Education Program, part of the National Institutes of Health, to control hypercholesterolemia. This pattern focuses on saturated fats and cholesterol, dietary options to enhance LDL cholesterol lowering, weight control, and physical activity. 
Background/History.
High cholesterol is one of the major controllable risk factors for coronary heart disease, heart attack and stroke. The National Institutes of Health created the National Cholesterol Education Program
and will have to trouble you for a little dinner." Doctor, looking up sadly, sighing and rubbing his eyes, said, "Friends, I am very sorry it is so, but I have been very poorly for some days; have no appetite and have not cooked anything, nor have I prepared anything to cook." The two, making themselves very free, opened the cupboard and continued, "Well, Doctor, as you are sick, we can cook a little for ourselves." Doctor—"I do