<s>[INST] I believe my five month old may have a milk allergy (female, 13lbs, 28inches) She has severe reflux and the pediatrician recommended we change her formula to Enfamil AR...but still has reflux...she also has really bad eczema and I just noticed ridges in her nail beds.  She had some yogurt the other night and spit it up within five minutes.  Does this warrant a call to her peditrician or can we wait until next month's check up?  She has been seen for a weight check and the doc is aware of these symptoms just never discussed possible allergy. [/INST] HI, thanks for using healthcare magicYou may want to take her to see her doctor sooner so that she would not have to continue the milk if she is reacting negatively to it.There are other milks that can be helpful with reflux or her doctor may recommend a normal milk with added cereal (to increase thickness) since she is 5 months old.It is important to remember when you start introducing her to other foods to introduce them one at a time. Each food should be used for 3 to 4 days before starting another.I hope this helps </s>