<human>: I started seeing this girl almost two months ago, we usually saw each other two times a week (1 during the week, 1 on weekend), didn't message each other ALL the time, but pretty frequently i sent her text or she sent me ones saying how we wanted to see each other, etc. 
Last time i saw her was two weeks ago, went to see some bands play, had sex in her appartment, and enjoyed it as always. 

The thing is i haven't seen her since, last weekend she went on a trip for 2 days, so weekend was not an option. What bothers me is that i asked her to go out during the week like always and two times in a row she said that she had arranged to go out with a girl-friend. She came back on monday, said that she wanted to see me, i told her i couldn't 'cause i had to wake freaking early on thrusday for a shooting (i work on films), so we arranged for seeing each other on wednesday night. 
Wednesday i sent her a text to arrange, and she responds something like she couldn't, i asked her what happened and she says something about having problems (sorry, i can't find the word since i'm spanish speaker), i told her that there was no problem, we could see each other another day.

Well...i don't know, it's kinda strange, she used to text me pretty frequently (altough not all days, and that's fine by me) asking to go out, etc, but now she doesn't do any of that, and if i text her she gives like 3, 4 words respones only.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: girl i've been seeing for 2 months suddenly is dropping contact, i have no idea why, what should i do?