Dear Meena,
My son had a rash after his first transfusion as well - he was 3 months at the time. His rash was due to the hospital linen and it remained for quite some time afterward. We then started to keep him in his own clothes during the transfusion and we took in our own blanets and pillows, this prevented the rash.
The rash may also be due to transfusion so do notify your doctor. Some children vomit after a transfusion and others also develop headaces. My son does not have these particular reactions, but a few other children that our transfused at our hospital do. Children's color can change often depending on how they are feeling, if they are warm, cold, hungry etc. My son often turns pink after a meal and when he is warm.
The best place to check for color is the mouth, if the tongue and lips are red then the hg is usually good - but if the inside of the mouth is pale then the hg is low. It is a good idea to note your observations and share them with your doctor. Did you have the phenotype of genotype testing done prior to the transfusion? Was a leukocyte filter used?
As Andy has said, please keep your nutrition up because it will give your child an early advantage if you are eating nutritious food and breastfeeding him. Also, you need to keep your own nutrition up.
Please keep us posted,
Sharmin