I know that feeling. A few years ago i could only do things a certain amount of time. Like going to bed was horrible. I had to get to bed like 1 then 3 then 7 then 9 times if i did not get it right then 13 and so on. Then the same with getting under the blanket. If i did not do it right I had to repeat everything and I could not stand the other numbers. Today only the 6 is a real problem. But still it's really annoying :/ glad to hear I am not the only one