is this an good sign??

Am 13 days past ovulation with sore boobs and lower cramps in my abdomen.. (which could mean af) am due tomorrow i haven't taken an pregnancy test because i dont have any at home i order an combo for next cycle if my period shows up they should be here tomorrow/monday... I have ovulation tests and decided to take one so i did and its an blazing positive! my period is due tomorrow am not going to test until my other test strips reach here .. could i be pregnant or its picking up an surge before my period...