I wouldn't worry about it. And if something occurs, such things are better to discuss with a teacher.
At a point in my practice I was advised to take some time off meditation, by one of who I consider my main teachers. Some things disturbed me, put me out of balance and I needed a little time to get back on my feet. In short, when you've made wrong assumptions about life, and you need to readjust them, it can be though. No need to go into details because I don't know if it happens to everybody. And if it does to you, consult a teacher as I said. In hindsight I don't know if taking time off meditation was the best advise, but it worked I guess because overall it didn't last that long for me and it came out for the better.
But I don't think all rough patches point to some kind of progress. And also, I certainly don't think usually those patches are a place to stop meditation. In general I'd say keep on it and only in rare cases may it be better to take some time off. When the hindrances come up stronger, for example, it may be better just to face them in meditation instead of running from them. Again, consult a teacher is the best advise. When you're shaken up is not the best time for self analysis.