These past few days I may have made a mistake of pushing too hard. She's still receptive towards me, answering my IMs and receiving my calls but I think I've been hounding her and I want to put a stop to it before it's too late. How do I recover from this? do I stop all sorts of communication for a while?

I'm no expert but if you feel as though you're being too needy you probably are. It's good that you are able to recognise it now instead of later on and wondering what went wrong. Maybe it's best to distance yourself a bit or even try teasing her a bit, maybe using a few negs just to mix it up. That said you mentioned she is very receptive, it would be silly to put a complete stop to any contact if you've built a lot of attraction and theres lots of flirting happening. I think the best thing would probably be to DHV, don't respond to her straight away give her the impression you're busy and let her chase you. As I said though I'm hardly an expert but hopefully that helps.