dd has always been quite windy, over the last month or so it has got worse. I have taken her diet right back to basics and built up again but can not find the source - milk has also been changed to soy. During the day this is not a problem, now that she is mobile she can get her burps up fairly well, even if she does tend to sound as if she should be sitting in the corner of the local pub. 
. At night I rub her back for about 3/4 hour before she goes to bed but she still wakes up trying to cough her wind up. I have used just about every type product on the market, these just seem to build up even more wind. She is teething at the mo and has a very snotty nose, could this be connected?