Am i pregnant?

im curious to know if im pregnant. I had my last period September 9-12th. I stopped my birth control Septmeber 23rd. I had withdrawl bleeding September 25th & 26th. I had sex 12 days after stopping the pill which was October 5th. He ejaculated in me. October  23rd-25th I had light bleeding. It would be bright red somethimes and then light pibkish/reddish sometimes. It came to a complete  stop after three days though. Ive had no cramps or anything. Am i pregnant? or is this just hormonal changes from coming off the pill. I dont wanna test too early. So when shoulf i test? Do you think im pregnant?