Could spotting after Unwanted 72 be withdrawal bleeding?

It's possible you have a URINARY TRACT infection and a rash.
UTIs can cause pain in lower abdomen..... Get tested!! and treated.
RASH could be unrelated or a side effect of medication.
Consult with a doctor for proper diagnosis and treatment.

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.

if you have at risk sex close to your period, delay or wait.
There is an option for emergency contraception pills, however they are not 100%.
Use condoms to avoid pregnancy and getting sexually transmitted infections.
Consult a physician for further advice and routine follow-up.s

Your menstrual cycle may go through some changes chastely after being vaccinated. The vaccine is known to be able to modify the menstrual cycle at times, but it's no cause for anxiety. Over time, your periods will return to when they were on their own. Meanwhile, always be healthy, be hydrated, and get enough sleep. 

External hemorrhoids or piles can occur during or after pregnancy due to the increased pressure on the rectal veins and hormonal changes. Hemorrhoids often improve with time and self-care measures such as a high-fiber diet, hydration, and creams. 

When a woman is pregnant, she might experience missed periods, nausea, and being constantly tired. However, stress can also bring these signs. Sometimes getting tested one week after intercourse may not give accurate results. If you want to be more certain, wait longer and do another test. 

Please ask the questions you have related to pregnancy

You might be having genital herpes which can develop painful red bumps in the area of the vagina. You should go to a gynecologist or an STI specialist in order to get the right diagnosis, and treatment.

If a period was 11 days ago, and there was unprotected sex around that time, then there is a possibility of becoming pregnant. Symptoms might include missing periods, feeling tired, and vomiting. 

It happens rarely. May occur with long-term use.