Why is my discharge thick and less elastic?

It is also possible that you could be pregnant if this month have passed your period and currently observing spotting, bloating, and nausea. But these signs might point to other complications too. I suggest seeing a gynecologist or obstetrician to do your pregnancy test and identify what underlies those symptoms of yours. This is always advisable to consult a physician.

Yes you are still protected if it is just 3 hours delayed but ensure that you take your birth control pills at the same time every day

It could be because of several factors that include stress, change in weight or hormonal disturbances if your fiancée has missed her menstrual cycle. But the main reason is pregnancy. A test should be conducted to determine whether she is pregnant or not. Further assessment and treatment should be discussed with a gynecologist.

It is necessary to take a pregnancy test if you had unprotected sexual intercourse and the delay of your period occurs. While a negative result and the absence of your period require an additional check with consulting either gynecologists or obstetricians. They can determine if there is an underlying condition responsible for the delay and offer adequate treatment

It is not typical for your period to be a bit late after having sex. Stress, changes in routine, or even normal hormonal shifts could all lead to the delay of your period. If you're concerned about being pregnant, you can use a pregnancy test to clear your worries.