Is it normal to not have a period for one month?

Question

I just got my period on Friday and ended yesterday. Glow says I'm late and in may I don't have a period. And it's weird mine are always at the end of the month...

Answer

Glows predictions aren't perfect. 
To not have a period in May your average cycle length would have to be more than 31 days. That's not uncommon. I believe average is around 29 days but there's a wide range.

Is it normal to not have a period for one month?

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