Opinions please.

I've been taking my birth control for a year now, and usually when I skip one pill I start bleeding the very next day. On the 17th I got black out drunk and had unprotected sex. (I know, it was irresponsible) I took my last pill the Thursday before, and I haven't gotten them refilled since. So, I've been off my birth control for a couple weeks, and I haven't bled at all. I've had excessive amounts of white gooey discharge, and sharp pains in my lower abdomen. I've taken two pregnancy test and they were both negative, but is it too early to test? And is there anyway I could be pregnant?