Return of hiatal hernia ?

Hi,
last year I found out I had a large hiatal hernia(a para-esphagual hiatal hernia of the stomach) and it was causing a lot of pain, so I had it operated on in Oct. Than about April this year I started to get the symptoms back again, and felt like I was being pinched where my stomach was to the point where I felt like throwing up, every time I ate. I changed my diet to contain fiber etc. So they did a CT on me 2 weeks ago and found that the hiatal hernia has returned? When the operation was done they removed 1/3 of my stomach and used a mesh? to fix it. Is it possible that the mesh came loose? I am on medicaid so had the CT done through Charity care Free Clinic and they just called my and told me this. I have not seen a Gastro Doc yet the clinic has to make the appointment. Anyy answers would be appreciated? Thanks