Clear White Nipple Discharge at 21 Weeks Pregnant: Normal?

After unprotected intercourse, taking the emergency contraceptive pill (I-pill) can prevent pregnancy by blocking fertilization. Since you took it within 24 hours, it is more effective. Having sex on the last day of your period usually means a lower chance of pregnancy. Pregnancy symptoms typically appear after a few weeks, but missed periods or nausea can also be signs. If you're feeling anxious, consider taking a pregnancy test.

Since you have taken a pill immediately after intercourse, there might still be some chances of pregnancy. Take a home pregnancy test or a UPT for confirmation.

Your body exhibits signs like­ missed periods, nausea, and fatigue­ when pregnant. Pregnancy te­sts detect this condition. Midway through your menstrual cycle­, an egg release­s from your ovary - ovulation. Increased vaginal discharge may indicate­ ovulation. Tracking ovulation aids conception efforts. 

Implantation bleeding is a light discharge that is caused when a fertilized egg attaches itself to the wall of the uterus. It usually happens 6-12 days after ovulation and it can be confused with a light period. Nevertheless, noticeable blood loss or very strong pain may indicate a more severe problem. If you have any concern, please visit a gynecologist for a thorough examination.
 

A painful cyst contained between the anus and vaginal opening that brings discomfort should be treated by a medical specialist. This may point at an abscess or infection and should be immediately attended to by a gynecologist or colorectal surgeon. Moreover, a doctor should also be consulted and the causes for regular stool or hemorrhoids investigated.