I just wanted to share my story. My daughter is 10 months old and has MSPI. We have come a LONG way. For the first two weeks she didn't show any signs of trouble but like the previous poster said, she spent a lot of time sleeping etc. Then she stopped having bowel movements. We ended up in sick kids hospital for a week and had to irrigate her for a few months (didn't know the cause at the time). While at the hospital (she was 3 weeks) she started to become very irritable. After eating she showed signs of silent acid reflux (didn't know that at the time). I even suggested to the doctors that it could be something in my milk and they we so "sure" that wasn't it. They kept saying "breastmilk is the best blah blah blah". When I look back now I can't believe I knew more than the actual doctors!!!! It really irritates me. At home she continued to show reflux signs and that is when I did lots of research and decided that she had acid reflux myself! Then I researched what could be causing it. I started to experiment with my diet and her pooping problem would come and go so I finally decided that her pooping problem was related to the acid reflux. I had a hunch that it was something in my diet after researching. I finally got in to a ped. who agreed with me right away and put her on Zantac. He told me to eliminate dairy/soy from my diet and low and behold she gradually started to poop again! Of course I had to really eliminate dairy/soy though. I had been trying this before seeing the ped. but once I talked to him I realized that she was sensitive to even the smallest trace. With my diet change and Zantac she became a totally different baby. It was a long, hard 4 months to diagnose her problem because her symptoms were not typical. She didn't spit up for one thing and "silent" reflux seemed unknown to the doctors. Plus she reacted to the dairy/soy by not being able to eliminate her bowels, which was not typical. Thank God I found a wonderful ped. at 4 months. For a while I felt horrible for everything Abigail went through in the first few months. It could have been completely avoided if the doctors had tested for this.
Once I started my non-dairy/soy diet it was very difficult. I was hardly eating anything. I have learned a lot over the months though and I just wanted to tell you that it does get easier. I finally stopped craving the foods I loved. I found other substitutes so that I could enjoy foods I love. For example I love stuffing so my MIL made some for me by using oil instead of butter. I have also had rice krispies with oil instead of butter and they taste exactly the same. I have substituted rice milk for cow's milk in many dishes. The hardest thing for me to learn was...HOW TO COOK

I used to have so many prepared meals and I had to start from scratch and make my own food a lot of the times. I started to really enjoy it though because I am eating healthier and I am discovering how to make the foods I like by changing the ingredients. One thing that has been hard is keeping weight on. It seems no matter how much I eat, I lose weight. The ped. warned me about this though. At the beginning I felt like I was starving because I thought I couldn't eat anything. I don't ever feel unsatisfied anymore.
I don't know how long Abigail will have this sensitivity. Every now and then some dairy/soy gets in my system (like if we are at someone's house and they aren't as careful about the ingredients) and Abigail still reacts. It takes several days of increased reflux and misery to get out of her system

I am going back to work in September and I guess I will have to pump a bottle or two a day if she is still sensitive. I really don't know at this point. My ped. said by 1 year 85% of babies outgrow it but I am sceptical since it wasn't until 4 months that I finally got it out of her system permanently.
I live in Canada and there is an Organic name brand for many of the items in the grocery store. A lot of their items are made without dairy /soy. They have pancakes, cake, cookies for example without milk/soy.
I hope I have given some hope to new mom's just starting out with this. I am thankful that I will be more prepared for baby #2 so that we can avoid him/her experiencing the same discomforts in the beginning of life.