Just diagnosed with IBS-C ? 31 years old & never had trouble in the past

2 weeks ago I stopped being able to use the bathroom. Thought it was just slight constipation, I tried OTC laxatives, nothing worked until a trip to the ER, they gave me citroma. I saw my gastroaneologist, who met with me very briefly, said it's IBS and gave me Amitiza. It doesn't seem to work well, it's been 2 weeks now, my body still is not having a bowel movement on it's own. Has anyone else experienced this? How long should it take for my body to get back to normal? I'm 31, healthy height and weight, work out sever days a week, eat a healthy balanced diet. I don't understand this.

My daughter has been dealing with ibs constipation for one year now. You need to add a probiotic daily. She takes VSL 3, she also takes magnesium supplements from the health food store. This has been helpful. She eats a fiber one breakfast with fiber buds every other morning. She takes a xanax .25 mg everyday. Things to add in your diet might be flaxseed, chia seeds, and plenty of vegetables. She uses the Fodmap to guide her eating habits. I hope that this has been helpful.