Pregnant??

I stopped my pill halfway through my cycle, 2 days before my fertile week, because I left my pack at home while traveling :( I bled a light period (withdrawal bleeding) from Jan 16-18 and then it stopped. Now, my expected period is 5 days late and I’m not sure when I should test again; I keep getting negative results. When should I test again? Or should I test at all? I’m not sure what the likelihood of me being pregnant is and I’m super anxious about it!