Any ideas on what this could be?

So lately the symptoms I've had are:

- Chest Pain (behind my sternum, comes and goes)

- Crampy stomach (esp after exercise)

- Fullness/pain in upper stomach (under sternum)

- Rib soreness

- Nausea (only on empty stomach, better with food)

- Bloating

- Burping (sometimes with regurgitation)

And all of these symptoms seems like I could have one of the following:

- GERD / Acid Reflux

- Hiatal Hernia

- Gastritis

But I feel like I have symptoms from each condition, so I'm not sure which is more likely that I have. It's been about 2 weeks now, I'd prefer not going to the doctor yet and just trying to fix my eating habits on my own. But I'm curious if anyone has an idea on which of these sounds more likely that I may have?

 

Could be gall bladder inflammation but then again, it could be so many things.  YOU REALLY MUST GO AND SEE A DOCTOR!!!