Missed period?

So I had taken two Plan bs in a month toward the beginning of June. Around the 8/9th I spotted for about three days it was kind bright but it would vary. Im confused on whether or not it was my period because it hit the day of my period and it was no show I am now 6 days late I took a test that came out negative however I took it with an early test Bc a friend had an extra and I’m not sure if that would influence the result. And whether or not it was my period could it have influenced my ovulation day?

Could you guys please share the Apps you use to track periods?