WOMEN who menstruate. MEN keep out.

Yes, activity, and stress and diet changes can cause changes in your cycle.
Do they not teach sexual health anymore?

I've never had it happen to me, but I've heard that it can happen, especially if you're working out harder than usual. Professional athletes can go months without having one. If you keep skipping your period, I would go to the doctor, even if you have to make payments to them. Your health is number one.

It can change your cycle. Typically, if I've worked out harder than usual, I GET mine. Are you eating enough? Because a lack of nutrients will stop your period altogether. I'd say give it a month or 2 to get used to your new lifestyle. And I'm a nursing student, so I do know a little bit about medical stuff...not as much as a Dr though

I have skipped three periods in a row before. It got to where i was going to the gyno every week for tests because I didn't trust my own any more. Sometimes it just happens. The OB-GYN had no idea why. I checked out healthy; I was exercising and eating right; it was probably stress from being in my first year of college.

So yeah. It's weird if you're regular and suddenly you get a ten-day hitch in your getalong, but if your doc checks you out and there's nothing physically wrong, here is how to fix it: book a three-hour plane flight and board the plane wearing white pants.

Some men know about menstruation too.

^Very true. Those with sisters, so I have heard.

Yes, it can be caused from changes in lifestyle. Probably no big deal but should maybe call the OB just in case. Pee sticks aren't infallible.

We are simply complex chemistry sets prone to fluctuation and change.

I have had this happen when I was working out daily and doing IF 5:2. I was a few days later than typical, but it eventually came...and went...and then came again. Boo.

I've only heard of a period being late or disappearing in conjunction with exercise in professional athletes, but that generally has more to do with their weight or body fat percentage than exercise to my knowledge. There are lots of reasons this could be happening: not eating enough calories, weight loss causing changes in the hormones, wacky birth control pills, and yes, pregnancy. Those OTC tests are not always right, sadly. I would see a doctor, 10 days a long time to be late. A blood test would give definitive results on pregnancy and be able to tell you if your hormones have gone wonky.

Yes, I have had late periods due to an increase in exercise.

When I got close to 30, I this started happening a couple times a year, I found that one of my ovaries was not dropping an egg and I would eventually have what is called a non ovulatory period, and when it came I thought I was going to die they were so bad. If you do not have it for 2 months I would make a dr appointment.

Significant changes to workout out and eating can trigger changes to your period, it should be back to normal within a couple months I'd assume.

I know it's really strange to be so late when you're usually regular, but I wouldn't worry too much over 10 days (I've been over a week late so many times before). Stressing can even delay it further. If it doesn't arrive soon though I would try and get to a doctor when you can, just to rule out any other possibilities.

Also worrying about why you haven't started your period yet can make it even later. :-)

So many things can affect your cycle... mine changed recently, out of nowhere. It has come like clockwork every 28 days for YEARS, then randomly a couple months ago, I got one period, and got another one 10 days later, and now I'm on a new cycle I guess... they are back to 28 days apart, but off track from when they originally came.

If it stays irregular, I would consult a doctor, but if it normals out and you aren't having other problems, you're probably alright.

Back in Nov mine came like 4 days late and no Im not sexually active so I knew I wasnt pregnant but it just happen to do so and I was thinking maybe it had to do with working out but its not like I work out daily for long hours on end

You do realize that when you have kids it changes...Did it ever change in the past besides for being pregnant both times? Mine is also weird itll change with the seasons, every 3 months I get it a week early

Yes-when u work out very hard and often it is very normal to have nothing left for a period!! I was in competitive track and field for many years growing up and I was not bothered with a period while I was in competitive 6 day a week training . Trust me--when u slack off it will be back!!! Enjoy its absence!!!!hahaahahah