Is it normal if i pooped out blood?

Well first of all... You must be rather young if you think anyone would assume having a blood-laced bowel movement was somehow related to the female menstrual cycle.

Second... you may want to talk to a doctor or your parents.

But for quick non-doctor medical advice...
If it's just a small amount it's probably nothing.

if it's in large quantities however, look at the color.
- bright red means it's fresher and is from the lower end of your GI tract.
- dark brown/black is more serious ... it's older blood from the upper part of your GI tract. ... unless you've been taking Pepto Bismol or iron tablets. (those will also turn your BM dark brown / black)

Go to the doctor.

That's.....weird/disgusting >.<

go see a doctor.

Do you hold in your poop often or push hard? Take daily shits.

Was it bright red or a dark rusty color? If it was bright, that's good; if it was dark that's bad.

Either way go see a doctor. It could be a harmless intestinal infection or something else.

It's on the list of medical symptoms that you simply can't ignore. You absolutely have to see a doctor, even if he just confirms that it was a burst blood vessel and nothing much to worry about.

It might be internal bleeding of some sort , it is never good to poop blood . I would go to a doctor and get it clarified . Could be something could be nothing .