Just go pro. Then you won't have to ever think about handicaps again.
I noticed that my handicap had been going up recently as well. I took a closer look at the courses I was posting scores on. I thought I was playing pretty good but it turns out that the slope of the courses are much lower than the course I play the most, so the "good" score I posted doesnt looj as good as my "bad" scores on harder courses. if that makes sense...
Have you been practicing?