Since saturday ive had what seems to be burning / acidity belly ache in my abdominal area, last…

Since saturday ive had what seems to be burning / acidity belly ache in my abdominal area, last night it started going into my lower back. I took gaviscon and its helped. The last 2 mornings ive woken up in pain but this morning not so much. Is it normal to have indigestion for this long? Trying to get an appointment today but my doctors is shocking !!!