When should i test for pregnancy again? have taken 3...? who got pregnant after 11 days on bc?

Hi! I had my period the 1st of june started my bc the 5th (that Sunday). I began having full unprotected sex on the 15, & we never pulled out. It was severeal times each day. I stopped taking them the 21st due to unfortunate events with me & the person I'm involved with. I havnt been sexually active since the morning of that date. Two days later I had some medium bleeding. That lasted four days ( only had to use 2 pads a day) & the past 2 days I've been feeling nausea (exactly like when I was pregnant with my first baby) & had sore breasts, and tummy pains. I've taken 3 tests in the past few days...when should I test again?