Once you've got A-Levels, nobody cares what grades you had at GCSE, just how many GCSE's you have. You should be fine getting in to do Pharmacy, but even if you dont get the grades they ask for, they might still offer you a place, but if not, theres always clearing. So even if you dont get the grades you hoped for, its not the end of the world. It happened to me, and they still let me in, so dont worry!