Ok this is long and confusing. Iv ilreg periods at best 22 day cycle. I came on my period wednesday to friday but was a light brown discharge on saturday night i had unprotected sex and woke sunday with bleeding and then monday and today light brown discharge. Just wondering really if its possible i could fall pregnant and if so when would be best to test as i dont always get a period every month. I hav to children so i know i can have children. Thanks in advance for any help