Now, don't jump to conclusions but, in my experience (as limited as it is), if interested a woman will give you other options e.g. "I can't make it this weekend but how about dinner some evening". Maybe she picks up your eagerness and it's a bit overwhelming...or maybe not. We can suppose all sorts of stuff but it is what it is. I think what you have to do is keep in touch with what makes you comfortable. If you find yourself constantly wondering then that's not a good place to be. Give it some time though.