No, if you menstruated then you are not pregnant - it is possible to bleed when pregnant, but biologically impossible to menstruate during pregnancy. Two days after menstruation spotting is normal, it's just the remaining blood leaving your body.
The hymen has absolutely nothing to do with menstruation. The hymen does not break - it can wear away, stretch, or tear as a result of penetration - typically the hymen will only tear if there is rough or forced penetration. Menstruation is controlled by the reproductive organs, you start to menstruate once you reach a point where the body is mature enough to start ovulating (which occurs two weeks before menstruation).
ovulation
Usually up to two weeks.
Usually two weeks after day 1 of menstruation is day 14. On day 14 ovulation usually occurs when the Graafian Follicle releases the mature egg into the fallopian tube.
No, you can't get pregnant one day before your period and you wouldn't be abler to menstruate if pregnant. Ovulation typically occurs two weeks before menstruation, it then takes time for the fertilised egg to travel down the fallopian tubes to implant in the uterus. During this time hormones change to let the body know about the pregnancy in order to stop menstruation.
Given a regular menses, ovulation normally occurs two weeks after menstruation.
either you where to rough, or your early-- both are normal.
Stress, diet, other hormone imbalances and pregnancy.
When you menstruate is determined by your menstrual cycle, a domino effect of hormonal changes that trigger ovulation and in turn if you don't become pregnant will then trigger menstruation. When you menstruate has no relation to the date on the calendar, which is a man-made way to track time.
You ovulate two weeks before menstruation - thus the soonest you'd skip a period is that first period, two weeks after you get pregnant.
Yes, of course that's possible. The average menstrual period is 5-7 days, about a week, but some womens periods are longer than this including going as long as two weeks - if this is a regular occurance we'd refer to it as menorrhagia. If this is a one-off then it's likely due to a hormonal imbalance, if it continues more than three weeks then go to your doctor to stop it.