What causes periods to stop but random bleeding from the vagina im only 19 and I haven't had a period since I was like 17 and I haven't engaged in sexual intercourse yet.

If. If you are having "random bleeding" then you are probably having irregular, light periods. There are other reasons besides pregnancy that can cause a woman to miss a period such as: stress, diet, excessive exercise or a hormone imbalance such as with a thyroid disorder or poly cystic ovarian syndrome. Since it has been 2 years since you had a regular cycle, you should see a doctor to discuss your symptoms. Good luck!

Related Questions

Me and my boyfriend had sexual intercourse I was on the last day of my period, we did use the withdrawal method but it was too late as he came outside my vagina, is there any chance I could be pregnant, I bleed for 4 days.

Small chance. On the 4th day of your period its less likely that you would get pregnant (but not impossible). The "withdrawal" method is fraught with peril. If you don't want to get pregnant, you should get on a more effective method. If you use this method long-term, you will eventually get pregnant. Best wishes!
Conception optimum. Women ovulate 14 days before their next menstrual period starts. In a 28 day cycle this would be day 14. Male sperm can survive for up to 5 days. If intercourse happens on day 4 of the cycle, conception is unlikely.

Blood coming out from vagina. Just got off my period 1.5 weeks before it started. I have had no sexual intercourse. What could this be?

Breakthrough bleed. Not all bleeding is your period and if you didn't ovulate a cycle you can have a missed cycle, irregular bleeding between periods and/or prolonged bleeding.
Common. Irregular periods are very common. Other than being annoying for you usually it is not a sign of something serious. Depending on your age and medical problems there are certain blood tests that can be done as well as a sonogram. Birth control pills can often regulate cycles. Woman who are done having children may consider an endometrial ablation.

If you have sexual intercourse and sperm enter the vagina and the next day you start you period. Can you be pregnant?

Probably not. If the menstrual cycle came at the correct time and is the correct amount of flow then the likelihood of conceiving having had intercourse the day before is almost little to none.

Sexual intercourse then random bleed after & pain not due period til next week, woke this morning with headache, feel very sick too what could it be?

Varied. Could be totally unrelated to intercourse. Allergies, early flu, hangover, abdominal pain form painful intercourse with uterine spasm and gastric colic, dehydration, food poisoning from meal before sex, early urinary tract infection, etc, etc, rest, fluids, tylenol (acetaminophen). Take temp. Seek assistantce if sx > 48 hrs.