Confused...

Ra

The top test was taken on CD 17 which was this past Monday. I took one more test the following day on CD18 and that was negative. Something this morning told me to take another test and I got another positive.. 5 days later.. so now I'm confused on when my actual ovulation date is for this month. I have had little to no EWCM so far so that hasn't been helpful. Any insights?