Desperate for diagnosis

Hi, I  am 70 years old grandmother. Something is very very wrong but I can't get appointment with GP.

In December I was having awful wind and constipation.  By January changed to no wind and diarrhoea.  Low abdominal pain just before pooing.

I put myself on Immodium on advice of daughter who has Ulcerative colitis. She also recommended eating eggs.

This helped somewhat. Not entirely.  Then a few days ago my oesophagus problem flared up. I have had GERD for years. I have omeprazole for it. I also have difficulty swallowing  at times.

The flare up was awful. I had a bowl of tomato soup for tea. Something I've eaten all my life. On this occasion it was like I had eaten  fire.  I can't  describe the pain in my whole oesophagus,  which continued for about 5 hours.  I tried to ease it with cold water.

I feel like my whole digestive system has gone mad.

Then I read that Ovarian Cancer can cause nearly all my symptoms!  Still can't get a dr in the flesh or on phone!   I don't want to go to A & E but I need help.

I stopped the immodium for one day, now the diarrhoea is back.  What shall I do?