If your LO couldn't tolerate soy or dairy products (or had another food intolerance), how soon did you figure it out? What were the main symptoms? It seems like such a common problem that I almost feel like I need to start the MPSI (or is it MSPI??) diet now so I'm used to it. (I know that's extreme, but apparently my head is running in "extreme mode" today. Thanks, Benadryl.)
Re: Dxing Milk and/or Soy Intolerance
Common symptoms are reflux (normal or silent), gassiness, blood in the stools, altered Ph of stools, colic like symptoms, mucousy stools, etc.
It can take up to 5 weeks for dairy to first leave Mom's system and then baby's to give relief of all symptoms. That being said a lot of mom's on the MSPI check-in on the BF'ing board say the seen some improvements within a week.
I agree that if it's not broke don't fix it. That being said, there does seem to be some hereditary link, so if you think your older son was MPI or MSPI and you don't think the diet will kill you, it certainly wouldn't hurt to eliminate at least obvious dairy a few weeks before birth.
Resources I love: www.godairyfree.org for info on label reading and substitutes
www.mspimama.com for recipes.
Also a common mistake is confusing MSPI with dairy/lactose allergy. They are different. MSPI is related to proteins in dairy/soy and is usually outgrown. An allergy is specifically related to the food. It can be more or less serious symptom-wise than MSPI and may or may not be outgrown.
IUI#2 Femara/Ovidrel (cd 5-9) = BFN
IUI#3 Femara/Ovidrel (cd 3-7) = BFP!
beta #1 11/23 = 270, P4 = 75
beta #2 11/28 = 2055
Our daughter E was born 7/29/2012!
Surprise, our 2nd daughter P was born 5/22/14!
later we tried to introduce milk again and he would have terrible gas and sewage like liquid diarrhea. He would just randomly throw himself on the floor and cry and scream. Now that he's 7 he can tolerate milk at his breakfast and lunch but for a very longtime we had to go without milk in his diet.
BFP #1 ended in MMC. Discovered Oct 2005 @10w5d, baby stopped growing around 6w. D&C.
BFP#2 Nov 2005. Baby's heart stopped @ 8w3d. D&C Jan 2006. Trisomy 18
BFP#3 Nov 2006. My "miracle baby" DD born 7/25/07
BFP #4 11/6/12. EDD 7/16/13~my birthday! No sac found @ 5w1d, betas not increasing. Natural m/c started 11/20/12.
BFP#5 11/9/13. EDD 7/21/14 Our beautiful rainbow born on his due date!!
IUI#2 Femara/Ovidrel (cd 5-9) = BFN
IUI#3 Femara/Ovidrel (cd 3-7) = BFP!
beta #1 11/23 = 270, P4 = 75
beta #2 11/28 = 2055
Our daughter E was born 7/29/2012!
Surprise, our 2nd daughter P was born 5/22/14!