Thanks girls!
I will take her down to the vet this morning and just have her checked over, Im starting to think now, she has been a little lathargic, I thought it may have been the heat. The vet tells me she is overdue for some vacinations anyway so it'll be a good idea to bring her in. I think i'll be putting her in dh's car though, dont want to make a mess in my car. lol.