discharge

So this evening I noticed this discharge coming out of my sows vag. It's a gelatinous white clumpy string of discharge. We have been hoping for the past month and a half that she is preggers. Could this be our male pigs semen? Or signs of pregnancy? Not sure what to think of this....

I have a total of five does in my herd, three of which are bred and due to deliver within the next nine days. The other two are doelings that haven't been bred yet and are new additions to the herd. One of my pregnant does, a first freshener, began to have a little discharge last Sunday. At...