issues with cows milk

So it looks like Amelia is having some issues taking cows milk , even with just half a bottle a day ( mixed with formular, and other feeds being fully formular or breast), she seems to be screaming in pain an hr or so after having it and then gets quite constipated , went to dr today about something else but did brush by the subject , he said just to keep her on formular for a while longer as her digestive system is not ready ( even tho she will be one tuesday week ) , she also had sevre reflux as a young baby where she would scream in pain too so im wondering if its in any way linked ? what im wondering is : would it be ok to put her on the toddler formular ? ( i bought a tin of the karicare toddler formular for 1+ ) but then i figured maybe it would be to harsh on her tummy , so thought maybe i should just leave her on the 6mth plus one , Any suggestions would be great , shes been having cows milk on weetbix for a few mths no problem and yogurt. Sorry to put this in general , i just thought id get some more suggestions as more people read . thanks in advance

My daughter always had some problem with lactose/cows milk.. Still not too sure what exactly is wrong because i found paediatricians and doctors were no help and always said 'oh, it's just because she's not ready. She'll grow out of it. blah blah' She's now 2 and still has problems, though not as bad. I had heaps of trouble breast feeding because she had reflux and it was extremely hard to get her to settle after feeds. At 6 weeks i gave up breastfeeding and put her on formula (she was already getting 'top ups' for a week or so as well as BF) but she still had reflux and was really upset. I changed to a lactose free formula and she got alot better! but still wasn't 100%. Ended up putting her on Soy and wow.. all of a sudden, she was a completely different baby! So happy. No reflux. No horrible runny, frothy poos.. nothing. Now, i put cows milk on her weet-bix but try not to give her cereal/cows milk every day because it makes her explode in her nappy... which is not nice >.<
If you feel there is something wrong. Kick your doctors ass and get them to actually help! I wish i'd been a lot harder back when i was trying to work things out.. And if i have the same problems with #2, i definitely will be getting my boot ready =P

we you switched from cows to soy how long before you saw the improvement? We just started feeding our boy soy last night after seeing a doctor and he's still not 100%.