LH surge 2 days after period????

me
I decided to start taking ovulation tests right after my period this month to make sure I don't miss my LH surge. I use the clearblue advanced digital. I opened a brand new box today (2 days after end of period), took my first test at 8:00 pm and got a solid smiley😳😳 we had sex and used pre-seed. Does anyone else ovulate so soon after their period?!