So I took a opk yesterday and it was positive!!!!! I haven't seen a positive in 4 or 5 years. Is there any chance that it could be a false positive? And does this mean that I am going to ovulate, for sure? I did not take my temp, thermometer is broken.

Then I took one this morning and it looked negative....if I took them less than 24hrs apart, why would one be pos and one be neg? Pics in comments

Top one is yesterday at 2:00pm

Bottom is this morning at 8:00am