Swimming causes missed/delays period?

Question

okay, so I'm only about a day or two late but I've been going swimming 3 times a week for about three hours each time.  
I do laps , dive , swim all over the place for the whole time I'm there.
  
Is this enough to mess with my period or make me miss it if it doesn't come in the next few days? 
p.s. before swimming I got no exercise unless videogames count.  
Comments Highly Appreciated

Answer

If you've suddenly changed your exercise habits, that can change your cycle

Answer

I have two hot tubs, a pool, and sauna at my apartment and I go swimming or hot tubbing all day everyday pretty much with small breaks in between for food, taking my dog out, or smoking a bowl. Nothing has changed. I also exercise in the pool and do laps

Answer

no it doesn't affect it, I was a competitive swimmer for years and never missed my period. Stress or late ovulation can affect your cycle. it's great you are out exercising but I would take a test if your period hasn't shown up in a few days. it's normal for your period to be off by a day or two all depends on when you ovulated.

Answer

I've never heard anything like this...

Swimming causes missed/delays period?

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