Normal. I had a crush on Keifer Sutherland when I was 10, then starting noticing boys in school etc. came later, about age 14. I got my period at age 9 even, but noticing cute boys came MUCH later.
It could be you are not at the noticeing boys stage, or you may not like the same type of boys. I now love HUGE muscular men. Like the kinds that take steriods. I never liked the boys the other girls dreamed over (which was New Kids on the Block btw). I did like Axel Rose when they liked New Kids, when I was 12.
You may not start to notice boys until a couple years after you start your period. Or it could be even later than that. Doesn't matter, you won't be able to get married etc. until age 18 so what is the rush?