Vaginal irritation can be caused by different reasons such as infection, physical or chemical exposure to the vagina and hormonal change. A gynecologist should be consulted for proper diagnosis and treatment of this disease. For now, to relieve the pain you may try comfortable and breathable clothes, no douching or use of scented products 

It’s fine if your period is late after taking Plan B because it messes with your cycle. Some symptoms like spotting, feeling sick, or changes in the timing of your menstrual cycle are pretty normal too. Remember that stress may also cause a delay in your period so try not to worry too much about it. Everything should return to normal soon enough.  If not though, then maybe think about getting a pregnancy test.

Most women do not get pregnant if they have sex 3 days after ovulation, but unfortunately, it's not impossible. Chronic alcohol consumption may contribute to a deficiency in the reproductive process and marital relations result in a baby's impairment. Mind the symptoms and take a test to be sure. Besides, take the test after you miss your period to know for certain. 

There is a chance of getting pregnant if you have unprotected sex around the time when your period is supposed to start. Some common early signs of pregnancy are missing a period, feeling tired, being sick to your stomach, or having tender breasts. The best thing for you to do next would be to wait until after your period is due and then take a test if it has not started yet. 

Your cervix feeling low is concerning and may indicate a prolapse, which is when reproductive organs sag down. Symptoms include a heavy pelvic sensation and a vaginal bulge. Prolapse can be caused by pregnancy, childbirth, and aging. Treatments range from pelvic exercises to surgery, depending on the severity.