so we're barely about to be one month, had no arguments or anything at all so far , till today; i havn't been in many relationships my life but don't really know what this means - .

tuesday we went to the club and had a great time , i stayed there till like 4 am but she left at like 2 .
wednesday we had no classes (we're university students at the same school) , and i didn't see her all day but chatted with her on SPAM , i thought everything was fine .
Today I see her at like 2 pm and she acts a little weird with me, i asked her if she's sick because her voice sounds a little weird - she says no and I continue to act normal with her . She says she has to go help a friend out on the second floor so she leaves and 5 minutes later I go up looking for a friend and she see's me, approaches me and tells me "why are you acting so cold with me?", keep in mind she looks a little sad/nervous
i got really surprised because well I thought everything was going fine, I had no idea she was feeling that . She asked if i'm mad at her and I told her no that I didn't even know I did something wrong . She said "im sorry" and hugged me and then I had to go so we left it at that ..
she sent me a text 20 minutes later saying " i love you " .

so what's this supposed to mean ? she's really afraid of losing me ? or is this bad on my part ? this is the first time me and this girl have had something like this happen , I really dig her and honestly dont want to do something that hurts her .
thanks

You did nothing wrong, she just sounds like a drama fiend. I've dated a lot of these girls they'll find something to get mad about, all I can say is good luck.