It looks like you're thinning at the front, dunno about your crown since you didn't post any pics. It'd be a good idea to see a derm soon and try finasteride+nizoral for at least six months to a year, then minoxidil if you want to (If you start the big 3 together you won't be able to see if you're a responder to minoxidil or not and may be wasting your money). Good news is that if you're an average responder to finasteride you could halt hairloss for five to ten years minimum, and if you've a good crown you'd only need a small transplant for your hairline if you want to get one later on.