I do not get heartburn, but going in for the flouroscopy is a good idea to me. I went in for my second fill 2 weeks ago and I was told I was not ready yet. I had to pay $30 for the use of the needle, but I felt reassured once I left. Atleast you can go in or even just email the fill dr. with any questions you may have. Dr. Acosta told me I was not eating enough because I was PBing and feeling full. I had problems with eating slow enough and chewing all the way. I have been eating much better these past 2 weeks, but like you, I can eat almost anything and for some odd reason I crave sweets. I have never been a sweets person. I am confused as to when I should go in for my second fill. I have a big appetite and am not losing any weight.