Aptamil comfort! I changed my LG to aptamil comfort on Monday in the hopes it would help her become…

Aptamil comfort!

I changed my LG to aptamil comfort on Monday in the hopes it would help her become more settled etc but she seems to have become constipated, she normally poo's at least once a day and we're now on day two with nothing just excessive smelly and loud trumps a grumbly tummy and still quite upset! Has anybody else found this? Any advice on what I should do? Go back to aptamil 1? Tia x