Skeptical about my OPK

Had a chemical last month and before my chemical my average cycle was 35-43 days long, after my chemical my period arrived 4 weeks later which is sooner than normal but figured it was because of the chemical and hormones. Well my period ended and on CD13 I opened a box of ovulation tests and dipped one and it showed positive. Tested again the next day to be sure on CD14 and this was the result.

Do you guys think I should keep BD for the next two weeks? (I usually ovulate later around 3 weeks into my cycle rather than 2 like I seem to be this cycle) or do you think this is my true positive and I’m ovulating sooner this month?