Barrett’s oesophagus

Hi everyone   I’m new to the group and new to BE.
I have had low iron deficiency for years and never really found a cause. I had a gastroscopy and colonoscopy about 9 years ago and nothing was seen. Recently changed GP and they were concerned that nothing had been done since. 
Procedure repeated about 5 weeks ago and I’ve been diagnosed with BE, I have a 3mm hiatus hernia and diverticulosis. I’ve not heard anything since, I’ve not started any medication. I’m feeling very anxious. My dad passed away with oesophageal and stomach cancer. Is there anything I should be doing?

Sorry for the long post
TIA