–Alone with my sister–Chapter one–

This first chapter has allot of buildup, so for those of you who for some reason don’t like that kind of thing, sorry.
Also, this is my first story, so I’d love some feedback. Thanks.
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“AAhhHHHAa!” I heard my sister scream. As I look towards her door from across the hallway through my open door, I quickly stand up
to help her. As I approach her door, I hear her scream again. I push open the door, and I see my blond, 14 year old sister weeping in the corner of her room.
I approach her, and placing my hand on her shoulder, I ask, “Sam, what’s wrong?”
My sister then proceeds to tell me that there is a “HUGE” spider on her window sill. I look out her window, and from the second story, I can see the yard
and the driveway. Crawling on the glass is a medium sized spider. I pick up a magazine, roll it up, and whack the spider.
Before I can turn around, my sister comes from behind and wraps her arms around my waist in a tight hug.
She’s still silently crying.
My sister has always hated spiders. I can smell her strawberry shampoo.
Being a 14 year old male, I begin to get a hard on. I pull away and start walking back to my room.
Let me tell you a bit about me.
As I said, I’m 14. I’m pretty much a nerd on the inside. On the outside, the only nerdy aspects of me are my glasses and the fact I have almost no muscle.
Me and my sister go to the same high school, and we both make strait A’s.