Could I safely abort with medications after missed period?

A missed period may indicate pregnancy.. Other causes include: 1. STRESS or weight changes. 2. Hormonal imbalances.. 3. Thyroid disorders.. 4. Polycystic ovary syndrome (PCOS).... 5. Premature ovarian failure. 6. Certain medications or contraceptives. 7. Excessive exercise or low body weight. It's recommended to take a pregnancy test or see a doctor. 
 

It's difficult to determine the cause of the blood clot without a proper medical checkup. It's possible It could be a decidual cast, from the uterus during menstruation or after pregnancy. It's also possible that it could be a sign of a miscarriage or another medical condition. I suggest get it checked as soon as possible to determine the cause of your symptoms and get appropriate treatment.

Puberty can start at different ages for different people and there is a wide range of what is considered normal. 
The ability to have children (reproductive maturity) usually occurs after the completion of puberty when the reproductive organs, such as the ovaries and testes, have fully developed. For most individuals, this occurs in their late teens or early twenties. However, it's important to remember that everyone's development timeline is different.

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

Yes definitely it is possible for a pregnancy test to show a positive result while you are approaching your menstrual period. Pregnancy tests detect the presence of the hormone human chorionic gonadotropin (hCG) in urine, which is typically produced during pregnancy. You can confirm it with another test or urine pregnancy test.