Pregnant ???

My period is 3 days late I took 3 tests already (Negative) I took one this morning.

3 months ago I took 2 plan B's in that month and 2 months ago I took 1 plan B and this month I had sex 2 weeks ago with out protection or plan B... y'all think plan B messed up my system ? Help please

⏰Update July 8; I'm 6 days late I took another test this morning it came out negative, I'm scared...