Is Delayed Period After Taking Emergency Contraception a Sign of Pregnancy?

Using Unwanted 72 after unprotected sex can help prevent pregnancy, but it's not 100% effective. The pills may cause a delay in your period by altering your cycle. Stress about pregnancy can also affect your period. Don't worry, give your body some time to settle. Taking a pregnancy test will give you a clear answer.

Sometimes taking emergency contraceptive pills like Unwanted 72 can make your period come late, this is normal. Anxiety and stress also play a role in postponing periods. Give your period a week or more, it should show up. 

Changes in menstrual blood flow can be influenced by various factors, including hormonal imbalances, medications, stress, changes in weight, or underlying health conditions. Since you mentioned using medications for skin allergy,

Unwanted 72 is to prevent pregnancy when taken within a timeframe after unprotected intercourse. Taking another dose within such a short timeframe may not provide any additional benefit and could potentially increase the risk of side effects. 

A blood hCG test is a sensitive test that can detect pregnancy earlier than most urine pregnancy tests. A result of 2 mIU/mL is considered negative for pregnancy. Consult your doctor if you are still concerned.

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

I would recommend that you see an obstetrician right away. Slow fetal growth may signal a potential miscarriage or ectopic pregnancy. Tests and ultrasounds can be run by an obstetrician in order to find the core of this problem. Thus, it is crucial to seek help from an expert obstetrician who can provide the correct diagnosis and treatment.