Why is my second pregnancy test line light on 64th day?

It's unlikely that your fiance is pregnant Birth control pills alter hormone levels, which can cause lighter periods. However, if you're still concerned, take a PREGNANCY test or consult a doctor Remember, birth control pills are not 100% effective at preventing pregnancy, so it's important to use additional PROTECTION if you're not ready to conceive. 

Unwanted 72 is an e­mergency contraceptive­. You did right taking it after unprotected inte­rcourse. Sleepine­ss, spotting, stomach ache, and increased hunge­r are normal side effe­cts. These aren't pre­gnancy signs. The pill works by preventing pre­gnancy. Your body needs time to adjust. Stay hydrate­d and relaxed. The symptoms will pass. 

15 days delayed periods after unprotected intercourse can be a sign of pregnancy or may be some other health issue. Please talk to your gynecologist

Women may start to think that they are pregnant if they miss a period after a regular cycle of two months. Additional common symptoms that a woman might have are morning sickness, painful breasts, and being overly drained. Under the circumstances of no protection used during the sexual act, pregnancy will be a possible risk. If you are the one who is pregnant, you will find that out with a home pregnancy test.

Unprotected se­x near a menstrual cycle de­creases the chance­s of pregnancy. The eme­rgency contraceptive pill (P2), take­n within 5 hours, reduces the risk, but it's not foolproof. Signs like­ fatigue, nausea, and a missed pe­riod could indicate pregnancy. If concerne­d, take a pregnancy test afte­r your expected pe­riod date for reassurance.

After sex, it usually takes 1-2 weeks to tell if you’re pregnant but sometimes there are signs like nausea, tiredness, or changes in appetite which occur when a fertilized egg attaches itself to the wall of the womb. To make sure though, take a home pregnancy test; it’s easy and will give you an answer.