Can GERD cause you to feel full all day after eating one meal?

Recently, I have had a lot of health issues which are new to me. I was told I had GERD after experiencing bad nighttime heartburn and  was put on PPI's but the meds didn't seem to help after the prescribed amount of days and then I started having a chest tightness which then spread to my back and arm in my right side which felt muscular.  This seems to only bother me mostly at night now.

Anyways, I haven't had a normal appetite in a month and a half since being sick with an infection which is what started all of this.  I have been experiencing the heartburn again (mostly at night), and sometimes I feel it even without eating.  Now, I feel full all day after I eat a really basic breakfast (usually oatmeal with milk and a banana).  Usually I only eat breakfast and maybe a small lunch or something small and I am full for the day, haven't been eating anything for dinner.  Like my food is just sitting in my stomach and not digesting properly.  I have been much less active and not exercising due to how I have been feeling.  I don't really feel any stomach pain/nausea much but sometimes a bit of stomach cramping.  I'm going to see a GI doctor in a couple days. I'm just wondering if this is a normal symptom of GERD because normally I love eating and I want to feel like myself again! 

I also feel like I've had such constant anxiety even from when I first wake up.  I am not normally that anxious of a person, I used to meditate everyday and I don't know if my anxiety is causing the GERD or the GERD is causing anxiety! Just wonder if these are normal symptoms or if this could be something else?? 

GERD doesn't make me full so you will need to ask your doctor about that.  However, anxiety can trigger GERD; stress started my chronic heartburn off.  If you are worried about what has caused your hearburn, this will make the reflux worse.

I have very similar symptoms and was just put on a ppi as well.

They think it may be my gall bladder. I have a hida scan next week and will update everyone after that