Hi my 5month old daughter is just being weaned just now on purrees - she loves them but she has choked a couple of times - she starts gagging, which I know is normal, but twice during these occasional gagging episodes she has struggled to take a breath ( just for seconds) due to the coughing and her lips have turned a very slight blue - a couple of back thumps and a good breath and she is always fine but can't remember this happening with my son......is this normal?? Ta!!!