Sliding hiatus hernia and gerd

I have recently been diagnosed with Gerd and also have a small sliding hiatus hernia, I am also waiting to hear the outcome of 3 biopsies taken when I had my gastroscopy recently.
I am suffering with the usual stomach pains bloating etc etc, but I have also gained around a stone in weight over the last year or so and I have only heard of people losing weight with the conditions. Has anyone else experienced the weight gain, I would be interested to hear your replies.
Kind regard
Pam