Hi, i am 22 years old I had my period

Patient: Hi, i am 22 years old. I had my period from 24- 29 may n had unprotected sex on 30th. I took an I -72 before 36 hrs. After 10 days .I.e on June 10, i observed a brownish discharge. Could it be a sign of pregnancy? Please reply ASAP.

Doctor: