Pregnant?

I had sex almost 2 weeks ago on the 5th. The condom fell off, and we noticed before he finished so he didn't ejaculate in me. He did however masturbate right before we had sex. So there would be sperm in the precum right?

I'm also on the pill. I didn't miss any pills this month and i took them everyday at the same time, but I am always bad about taking the placebo pills, so I probably started my last pack late.

Now my period is late, and I'm nervous af. Could it be because I'm shitty at starting pill packs and messing up my hormones? If I took a pregnancy test would it show results this is my 3rd day late. I've had some brown discharge is it my period or implantation bleeding. Please help I'm so nervous 😭