<human>: Give me the gist of the text in a nutshell

So one of my friends is in town for exactly a week because of her spring break and she came in last Sunday. We were born in the same hospital one week apart and our parents have known each other for a long time.

Unfortunately the week she came in I work and have school because I already had spring break. So far all the time I had was when I've talked to her at my house. Well the goal was for me to get off today, (Saturday) so that we could all do something together tonight because when I glanced at my schedule previously I thought I saw that I had work at 6:30pm tonight, (which is what my usual schedule is on Saturdays). Well Saturday comes I wake up and I have a voicemail from my boss but its just one second. I text him asking if he needed me and continue with my morning. Well I'm in the facilities and he calls me...apparently I had work at fucking 8:30am this morning and not 6:30pm as I thought so now I'm covering a night shift instead of a morning one and I won't be able to do anything at all with one of my best friends. And she leaves tomorrow. Also, thinking that I would have time today I was planning on finishing up some pretty important homework that is due Monday but fuck me I have to do it tomorrow now and won't even see her off. This may not seem like much but this really means a lot to me. I got so pissed off at myself I literally ended up breaking a golf club and kicking a hole in the wall (no one was hurt of course).
<bot>: Forgot to glance at my schedule; missed the last days my friend is in town and kicked a hole in my wall.