7 days until ovulation

First off my cycle is typically on time including my ovulation. It's like clock work, same time everytime *maybe* a day or two earlier or later but usually spot on. Well I am 7 days until predicted ovulation and took an OPK and it's positive. Could this be my body just doing something weird and having an LH spike and it's not my actual ovulation. I know without tracking bbt it's hard to know for sure but I was wondering if someone had a similar situation.