airlock fell off

I am making cider and the yeast blew the airlock off over the first night. I siphoned some out and put it back together and took the cap off my S shaped airlock. It seemed to then have a great, fast speed of fermenting. A day or two later I decided to add some pectic enzyme to clear it up. Now...

Ok, so I just noticed that my airlock fell off and I'm sure its been close to a week from the last time I checked. I'm about a month and a half into the brew, what should I do? Do I just recap it and let it go or do I need to dump it. I cant tell if its infected but its still slightly foamy on...