Maybe I was a little tipsy, but after I pitched my yeast into my wort I didn't clamp the lid on my bucket all the way. After two days I didn't notice bubbling in my airlock, and magically I realized the lid wasn't snapped all the way on. What is the likelyhood I'll my beer is contaminated? I know all I can do is keep moving forward, but I want to prepare for a heartbreak.