history: I have to take a physical soon, and I haven't been to the doctor in ages!  I haven't been to the doctor in ages and I need to take a physical soon. I feel great though_comma_ so I think it'll turn out well! That is a good attitude. You shouldn't have anything to worry about.
current: I do exercise a lot, which is why I haven't gone to the doctor in so many years. Kind of a bad habit not to get checked up, though.
next: Yeah sometimes doctors will notice something before it gets worse. Better to be safe than sorry!