First cycle temping. Positive opk cd 25 and not really a temp rise

K

Any insight? I know I started recording right at ovulation but I took my temp

A few days prior and didn’t record bc I don’t remember exact numbers but they were around 97.1-97.3 still. Cd 25 shows positive test (only positive I’ve gotten this cycle) but little to no rise in temp? Honestly I could be doing it wrong because my work schedule only allows me to temp 6:30 am and around 9:30 am. So it could be off, right?