You have posted this same basic question at least three times now and you've been given advice and support in response.
Since you keep reposting, I have to think that you're not satisfied with the answers you're receiving and so I repeat MY original advice to see your doctor. He/she is the ONLY one who is going to be able to diagnose what this "boat" feeling is being caused by and give you definitive answers to your questions.
Peace
Greenlydia