Hi, Thanks for posting in HCM. I have read your description and understand your concern. What spotting you had following unprotected intercourse could be due to implantation bleeding. However, this itself will not tell that you could be pregnant. Kindly wait until you miss your scheduled periods and then take a urine pregnancy test after a week. If it is positive, you can get the pregnancy confirmed by undergoing an ultrasound scan. Consult Gynaecologist with the report for necessary advise and follow-up. Hope the information provided would be helpful. All the best.