Stress, environmental changes, moving to a new place, unhealthy eating habits, excessive exercise, pregnancy.....the list of possible reasons is a long one.
this could be pregnancy or stress.
Yes. It can delay the menstruation. This may be due to psychological trauma of the dengue. Any psychological trauma can cause the menstruation to delay.
The only way you can delay menstruation is by taking birth control pills.
Yes
Norethisterone 5mg. Effective to delay menstruation with minimal side effects.
You dont get your period on time?
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The question is pretty vague. The answer to the question as asked is certainly "yes". That's not as helpful as it could be; you might want to go into more detail as to precisely what sort of "problems" you're talking about. (Unwanted pregnancy, for example, is one "problem" that will delay menstruation for several months.)
yes
No, generally speaking not eating meat isn't going to have a big effect on your menstrual cycle, certainly not enough to delay menstruation. If not eating meat has caused you to become anemic, it could delay your period. Take vitamins with iron.
Could be pregnancy or it could be that you're starting menopause. It could also be thyroid hormone imbalance, or a number of other things. See your doctor for an accurate diagnosis.
Not usually ... is theoretically possible but not generally.