Unprotecte­d sex might have caused your late­ period and PMS-like symptoms. These­ are potential pregnancy signs. The­ egg may have met spe­rm, resulting in pregnancy after unprote­cted intimacy. To avoid pregnancy, you can take e­mergency contraception like­ the morning-after pill within seve­nty-two hours of unprotected sexual activity. 

It is best to visit a gynecologist who specializes in reproductive health to properly diagnose and treat any potential complications. 

It is not rare for girls to have delayed menarches until the age of sixteen years. Although, having pain in the lower abdomen might be a red flag and will need to consult with any gynecologist. To have an overall reproductive health, it is essential that one gets proper diagnosis and treatment from the specialised doctors.

Some may feel motion sickness, fatigue, and increased appetite when they are pregnant. These signs may appear within a few days after fertilization. Nevertheless, anxiety or modifications in somebody’s regular schedule can also result in the same symptoms. To confirm if someone is pregnant they should take a pregnancy test. It is advisable to wait for some days after a late period to have the most precise outcomes.

In women, increased LH in urine is expected during the menstruation period. LH is a hormone that assists in the release of eggs from the ovaries. Following the end of your monthly period, the LH levels might increase as a way of preparing for ovulation. There can be changes in the cervical mucus throughout the cycle. Having lotion-like discharge before getting the sticky one is typical. 

After an abortion, women commonly take days or weeks to have bleeding, which is completely normal. Be aware that the bleeding is heavy, it has a bad smell, and you have a fever, that could be evidence of an infection. The infections may appear after abortions but in most cases, they are treated with antibiotics. 

While it's less likely to conceive right after having your period, it's still possible to become pregnant at any point in your menstrual cycle, including during the days immediately after your period. 
If you've had unprotected intercourse and missed a period, it's important to consider the possibility of pregnancy and take a pregnancy test to confirm.

You might have ovulation ble­eding. This happens when your body le­ts out an egg. You might see a bit of blood or cle­ar sticky stuff. It is normal to have small cramps too. It will go away soon. Drink water and rest. You can put a warm thing on your be­lly if you need to. 

It could be due to an yeast infection, STI, irritation from certain products or materials, or even hormonal changes.