Entry to a Veterinary Nursing Career? From GCSE Level?

So I'm doing my GCSEs this year. I've got very high predicted grades (Nothing Below a Band 6(Grade B) apart from French! But I want to go into Veterinary Nursing, AndI'm not sure how to start, what A-Levels I need to take, or if I need to do a Level 3 Diploma? I'm not sure how it works, what equivalency is involved or anything! My school careers advisor is basically useless. She told me she didn't know and to "google it". So alas I've turned to the internet! Hopefully you guys can help me out a bit more than she did! What do I do next? What do I study? Ahhh! I'm ripping my hair out and I need to start applying for college soon!

Please help me out!

Mimi,