I had a blind date with a girl the other day. I texted her these two days, but I won't come back for a day or two. What's going on here? Don't I have a chance?

It depends on what is returned. One possibility is that she doesn't like texting, but this possibility is very small. Even if she doesn't like texting, she can tell you that texting is a waste of time and money, for example. The second possibility is that she doesn't have a crush on you and has no feelings for you. In fact, the failure of blind date is normal, just normal!