Some advice would be nice.

So im 18. I had a stomach bug, after that ive had all the ibs symptoms. Im going to the doctor to be 100% sure. Im just asking if anyone knows how to deal with it. Its been 2 months. Havent changed my diet ive just waited for it to leave. But its obviusly not leaving. Im losing hope in everything. Cant workout or do any of the things i used to be able to. Just feel like i cant deal with this no more. If anyone knows how i can relieve it or just do normal things without the fear, anxiety, and the symptoms of it. I would truly appreaciate it.