changes in my body

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I have a few things that are going on with my body 1. boobs are bigger 2. gaining weight 3. my ribs are starting to expand. 4. I am always wanting to nap. 5. I eat alot. 6. Back pain 7. Moody.

Now You might say that I am pregnant but I can't have a baby due to my tubes being clamped. not cut or burned.
I am wandering if it's because I am seriously overweight. I hate feeling like this. I feel really bloated I want to go out and walk but can never get the motivation to do it. What is wrong with me?