dlj9763

Hello,
This is my first post. I am so confused by my symptoms. I am a 48 year old woman, not overweight, and in very good health. I eat a very healthy diet and have no cancer in my family.
For a long time I have had what the GI thought was proctalgia futax -- occasional night waking with a spasm, relieved by a bowel movement. I have also had occasional shortness of breath during the day with no explanation -- with a short duration.
Recently the symptoms have moved to daytime and have really expanded. Over the holidays I experienced rectal pain and an array of symptoms from constipation to diarrhea, and the need to go frequently. (Multiple times a day.) That is not unusual -- in reading about IBS, I have many of the symptoms.
In the past few weeks I have also experienced a sense of fullness while eating (sooner than expected), followed by nausea and light headedness after the meal. This can happen after drinking water too. This is often followed by chills. I am also experiencing is shortness of breath, increased BP, feeling of my heart beating in my throat -- these feelings seem to be in conjunction with my need to have a bowel movement. They have awakened me abruptly from a deep sleep on occasion, and at times the feelings (also anxiety) make it hard to return to sleep, even if I have been to the bathroom.
My GI sent me for an MRI defacogram (had that last week) and is also planning to do a flex sigmoidoscopy. I was worried it would be cancer but she didn't seem to think that was the case. (I had a colonoscopy after consulting about the rectal pain (diagnosed as proctalgia futax) two years ago with a few benign polyps.)
When I don't have symptoms, I feel fine. No fatigue...able to exercise. I have lost about 5 pounds but not surprising since I am eating a very simple diet.
I am wondering if I should also go to my internist or maybe even an ER to be monitored for the shortness of breath!
Is there anyone who has experienced any of this? I would so appreciate any insight. Thank you so much.