I'm sure this question is asked often.. but she stopped texting all of a sudden?

So, I've been talking with this girl for a while now.. must have been about 4 months or so now. We talk a lot through text. Recently she hasn't been responding to my texts and I'm a little worried simply because we communicate pretty regularly through texting. We spend time together pretty regularly and I did go out with her last weekend and everything seemed to go alright, we were even talking after we got back home. I didn't talk to her for about two days and then I texted her again. Around the middle of the day, she just suddenly stopped texting me and haven't yet since. It's been about 2 days now. This seems like a short time, but given our relationship it is pretty odd she hasn't responded. Now, i haven't bombarded her with texts, probably have sent 3 texts since. Any reasons why she stopped? I know i haven't said or done anything wrong, and she's not the type to just stop talking to me for no reason. I'm thinking I should lay low for couple days, and not text her during those times. Any comments will be appreciated.