opk test

These are my opk tests I took this evening. I took two at the same time because I had been using the clear blue every morning but haven't gotten anything so I was wondering if something was wrong. I took a test this morning and it was negative then took the test this evening and it was positive so my DH and I did the BD and I'm wondering if we should do it again tomorrow? And how often other people do it after getting a positive ovulation?