Gained huge amount of weight over last few months, bloated belly, dizziness, headaches, back pain, blurry vision, fluttering in stomach. neg hpt. help?

Exam: multiple medical possibilities: you must be examined and tested for metabolic dysfunction, diabetes, thyroid disease, GI disease ,cholesterol and lifestyle modification: I suggest a comprehensive physical exam and blood testing.

Face to face: with symptoms as related you should consult with a practitioner who can do a full exam and then add appropriate blood tests and imaging and discuss the results with you.