Need help!

I am on the pill but the second week of pills I kept forgetting and took most of that weeks pills the next day. Fast forward to now. I’m on placebo week and started my withdrawal bleed on Wednesday but it was just spotting. Thursday’s was a little heavier but just barely. A mix between spotting and light. Friday, today, I’ve not bled at all. This is the shortest and lightest period I’ve had.. could I be pregnant??? When can I test??