Thanks everyone.. Dr has said it's an ALLERGIC REACTION to a Mozzie bite, he said given her previous reactions they seem to be increasing in severity which can be normal for people with Allergies.

He has told me to use her steroid cream (she has this for eczema but only used it once) on it and continue to give calartyne for the next couple of days.
He has also given me a stronger medication so in the case of a more severe reaction or multiple bites on her face/throat etc we can give her that and then we are to take her to the SDr's the day after to see whats happening.

So i have started a thread with advice on keeping the little buggers away from her, if you have any ideas please pop over there and leave me some advice.

Thanks for the reassurance last night... i love BB