Period 3 weeks late but positive ovulation test

Jennifer • Ttc for 5 years.
Period is 3 weeks late. I had some brown discharge/spotting last week off and on for a few days. Thought af was coming but never arrived. Woke this moring and when i wiped, there was some clear discharge....looks like it does when i am high peak ovulation. I took an ovulation test just to see and it was positive high can this be if i never actually had my period?? Can you be pregnant and get a positive ovulation? (i have taken 4 hpt tests that all came back negative)