Ha! Not a problem actually. It's normal for flowers to sprout earlier than expected. They always come out due to being exposed to the right conditions - the soil temp, sunlight and moisture level. Plants can't differentiate the seasons; they don't know about winter or summer, etc. They simply react to the kind of conditions they're exposed to. It's kind of a good thing so I agree with @Rosepaul that you make the most of it.
I learned about this a few years back when my Christmas cacti bloomed earlier than expected, several weeks actually. Which got me so worried. But after checking out with fellow gardeners here I realized it was okay, so I waited until spring and yep, I wasn't wrong. The purple flowers kept on, although they also died off earlier than usual. So, yeah, just cherish them.