¿Por qué no me viene la regla desde hace un mes?

There is no chance of getting pregnant from sperm touching your skin.

PERIODS usually come every 21- 35 days.. Stress affects it. PAINFUL periods are common. Heavy bleeding may be abnormal.. Irregular periods are NORMAL during puberty . HORMONAL BIRTH CONTROL helps regulate periods . Consult a doctor if concerned.

Many expe­cting mothers experie­nce vomiting that comes and goes during e­arly pregnancy weeks. The­ hormonal changes occurring in your body cause this. If your vomiting stops, that's alright too. Ensure you e­at well and remain hydrated, as the­re's usually no cause for concern.

VAGINAL DISCHARGE is common.... PREGNANCY TEST can confirm pregnancy.... Practice good genital hygiene.... AVOID Douching.... Seek medical advice if discharge smells bad....

Irregular spotting either before or after a period is the result of different factors including hormonal changes or stress, any kind of infection, or pregnancy. It is better to visit a gynecologist for detailed examination of the root of this problem diagnosed and treated.
 

It is good that you took a morning-afte­r pill. Brown or black discharge is normal after taking the pill. It happe­ns because the pill can change­ your normal cycle. This discharge can also happen be­cause of stress or other things. It doe­s not always mean pregnancy. But if you miss your period, take­ a pregnancy test to be sure­. 

When you took apple cider vinegar to postpone your period, it may have had an impact on your body. If you notice any blood after that, it could be due to the vinegar interfering with your menstrual cycle. This isn’t very common but it can happen. It would be better not to do this with apple cider vinegar again. Your body will probably return to its normal state before long.

Yeast infe­ctions are quite common. They occur when your body has too much ye­ast. This imbalance can result in itching, burning, and strange discharge­. If it's your first time experie­ncing a yeast infection, the typical tre­atment is one fluconazole pill take­n in a single day. Fluconazole kills the fungus re­sponsible for the infection. Howe­ver, you must follow the medication instructions pre­cisely.

Chances of pregnancy are low but not impossible.... White discharge may be normal.... 

Periods can be delayed due to stress or changes in routines. Other factors include hormonal imbalances or a possible pregnancy. If the kit test resulted in a negative, consider consulting your gynecologist after waiting a while.