Can bleeding while using Vines be implantable bleeding?

Hello, I have been using Vines tablets for over a year. I use them regularly, always at a fixed time, vomiting and diarrhea did not occur in me. I had intercourse this month at 4 and with 15 active pills with additional protection (condom) that did not disappoint us and did not break or anything. This morning I noticed bleeding in myself. Could this indicate implantable bleeding despite the use of double protection? Could it be due to intercourse? Should I take a pregnancy test? The first intercourse was 12 days of rhenium you fit the timing of the occurrence of such bleeding.