Using the premom easy at home ovulation test, just took one now and it says 71 low, yesterday evening was 1.27 so the app has changed that to peak day. Had sex on cycle day 10 and had sex today cycle day 12, will test again this evening to double check that it hasnt changed, as this is what it did yesterday morning, was low, then in the evening went to high. Is this a good chance?. Thank you.