TTC- weird ovulation?

Shelby
I had my period August 5-8, and then took an ovulation on day 10 of my cycle (Aug 14). 
I have been taking an ovulation test every day (sometimes twice a day) since then. Today is August 24. 
Is it possible to show LH surge for 10 days?!
*Possibly important to know- I had a tubal removal due to an ectopic pregnancy in April. I do not have PCOS (that I'm aware of-highly doubt).