acenase

I went to my car this morning to find out when I put my key inside, I can't turn it to the left and the right. So I go to the passenger side, and I turn it to the left (unlock) and my alarm starts ringing! (I didn't even know I had an alarm) why does the alarm go off after unlocking the Passenger side door?

Then magically, I try to open the Drivers side door, and it magically turns again. It feels like it gets stuck sometimes, so I don't know what could be wrong. Anyone have any idea on these two problems?