A couple days ago I had an acute onset of rectal bleeding with going to the restroom. There was a moderate amount of blood, but it was ongoing in the day even with just bearing down, but not using the restroom. Today there was a small amount in the stool in the am, but then not again in the day. After eating in the evenings I have been experiencing a great amount of bloating and gas and some nausea. This evening was worse with a lot of intestinal bowel sounds and a feeling of having to have a bowel movement, but felt constipated and some mucusy blood was in stool. Can you give me any ideas and if this is serious enough to see a GI doctor? It has improved over last couple days.