Hello everybody. I'm a 21 year old male 5"10 158 lbs so my bmi is pretty normal I'd say.

Now let's get to the point. It's been since October that I've been getting abdominal pains usually at the upper left side of my belly. So we're talking about 3 full months. Since then I find it hard to poop. Like I can't go to the toilet like I did before. My poop only comes out in very small thin layers and in very little pieces. I don't have diarrhea, I actually find it very hard to poop. I gotta try 4 times a day 

Also I've so many gasses , like I want to fart all the time, and the farts are usually very long but odorless. It's also hard to pass gass, but it's easier than pooping. Gladly I haven't seen blood in poop, nor I have weight loss, or even loss of appetite. My abdomen just really hurts. And I can feel something is not right. It always feels so messed up and I can hear many sounds and ramblings coming out of my belly (I guess it's my intestines). I also feel something like a ramble there sometimes, I don't if its the aorta, but it feels like something pumping hardly. It has really ruined my quality of life. Plus I get chest pains here and there.(got checked it's not heart related, nor GERD, probably a muscle) 

Now, I went to a gastroenterologist, who ordered an abdomen ultrasound which came back good, a CBC that was normal too, and a poop culture that didn't show anything. I asked them about a colonoscopy, but they said they wouldn't do it, because it's for people over the age of 50, and I don't have any bad symptoms(like blood, weight loss and loss of appetite) . (the truth is I kinda suffer, stomach also feels so messed up). They also checked my CRP and some other stuff that came back negative. So they said there's not inflammation (so they crossed out things like crohn's etc)

I'm thinking the most possible cause could probably be IBS, but Gastro told me 6 months should pass in order for it to be official. I kinda suffer tho. What's the treatment for ibs? Does it get any better? Like seriously I feel that my body doesn't function any more at all. Days are hard, there's no day without pain, I just lay in bed suffering . Lastly there is no family history of ibs, colon cancer or other related autoimmunes. Also I have a healthy lifestyle(no alcohol, no drugs, no cigarettes, and not a bad  diet)