Advice?!

So I went off my pill close to two months ago. Had one normal period and my next period was due last Sunday (March 23). I haven't gotten it yet and got one negative test on March 25 :( do you think it's just from coming off the pill or maybe I am pregnant? We had sex my ovulation day and the days surrounding. Tmi but my boobs are a bit sore today and absolutely no sign of my period coming. When should I test again? TIA