I'm a 27 year old female and for the past two months almost every day I've been waking up with a rumbling stomach, flatulence, and then diarrhea/loose stools. There was a week between these two months that I had regular stools, but the morning diarrhea is back again. I have mild pain every now and then throughout my abdomen/stomach area but nothing I can't handle at the moment. Since this all started my anxiety/stress (mostly health anxiety) have been through the roof, my appetite is basically non existent, and I've lost a good amount of weight (possibly due to not eating much). I believe I've also seen mucous on my stool and sometimes undigested foods. I made the mistake of googling my symptoms so my thoughts are all over the place and not helping with my anxiety. I've done some blood tests and a CT scan which came out normal except for very low vitamin D which I'm taking supplements for, and next I will be having a endoscopy/colonoscopy in a week and a half for a diagnosis hopefully. I mainly wanted to see if anyone else has these IBS like symptoms but only in the morning? It feels like the only time my body starts digesting is when I first wake up in the morning and does it so fast that it just comes out as diarrhea. Throughout the day I haven't been using the bathroom for number two but that could be because I've barely been eating. I'm also gassy throughout the day but not as much as when i first wake up.
Sounds like the morning rush which you can get with IBS which will not show on any scan or test and can be triggered by stress and anxiety and made worse by worry.
You will have to adjust your diet by consulting a dietition. It is usually covered by insurance if referred by a physician.