Hi there Krystina.
For starters, it is never a good ploy to use one's full name in matters such as this (assuming it is your real name).
Second, it is never a good idea to practice 'unsafe sex' even while using contraception
as infections aquired therof can potentially be more damaging than the pregnancy
Going by your history, yes you can be pregnant & also possible that you could have what we term a 'spontaneous abortion'.
For best results & to calm your nerves & fears, first do a serum/blood BhcG test right now. This will tell you what your pregnancy status is with a titre & can be repeated in a week to check for falling titres if posisitve.
Next visit your gynecologist or dermatologist
on the ground who will read the report & then guide you as to what blood/urine tests one may need to do to rule out STD's.
If you wish discretion & to talk to us, please use our premier 'ASk-A-Doctor' portal & you may specifically request for yours truly & will be happy to take this further.
Cheers & Good LUck!
Dr Praveen Rodrigues MD
Dermatologist, Cosmetologist, Venereologist
Vikram Hospital, Bangalore