Hi there, I have understood your concern . I will suggest you the best possible treatment options.
1 ) First of all, if you are talking about getting pregnant at 13 years of age, then it is not only problematic for the baby but also for the mother. As women's body is just about to start getting ready for the growth at this age and attains maturity by 18 years , keeping and growing
pregnancy in the body till 18 years is definitely at risk.
2 ) Secondly, with the history of regular cycles and unprotected sex act, if you cross your dates, then please get morning's first sample of urine tested for pregnancy. In case of doubt blood
beta HCG test and USG will be of help.
Only presence of sticky secretions has no predictive value as far as pregnancy is considered.
I hope this answer helps you.
Thanks.
Dr. Purushottam Neurgaonkar.