3rd morning OPK test positive???

Ashley • TTC baby #1 with my hubby. This is will be my first time being pregnant & TTC so everything is very new to me

Im using Answer Ovulation test from walmart & this morning is the 3rd time it was positive. 2 lines showed right away but i also tested with clearblue Advanced digital and it said low.

Which one should i believe?

Could i still be testing positive for LH?