Quoting ForeverHisArmyWife:" You can test again tomorrow to see. If it comes out darker it means you are getting closer to ovulation, ... [snip!] ... possible ovulation and a few days after in order to really track it and have a better idea of when u ovulated. Good luck!"
You can ovulate 24 to 36 hours after your surge...at least thats what the first response pamplet says because I was worried since I didn't have sex the day the positive happened and the test was completely blank after that I missed for that month but someone pointed out the surge happens before ovulation and sure enough I got sex in in time.