You ROCK Bik!! I love that you are swimming and enjoying the current weather...and making plans for the colder months...well done!!
Yes, go get your stomach checked out. When my anxiety was high, I too thought I had an ulcer, but did not...just high acid, which may be causing your empty/gnawing/hunger symptoms?
Keep up the good work, like I said, it is a process...and you are moving in a good direction for sure!
Talk soon!
S.C.