Took off implat

Hi i took of my implat on the of August 11 and ive been unprotected having sex with my husband. the thing is i had my period july 15-20 and i guess because stress for my wedding i spotted Aug 4-7. After i took off the implant i had another period Aug 13-18 then again spotted September 1-5 now i am so confused since we ar trying to have a baby how do i now my ovulation days... help on understanding this craziness😊