Me and my boyfriend had unprotected sex October 22, 2016 same day I was ovulating. I got my period…

Me and my boyfriend had unprotected sex October 22, 2016 same day I was ovulating. I got my period on the 24th and it lasted till the 27th. A few days after my boobs got really sore and tender and the color has changed. It's been 14 days and my boobs are still the same. I took a test on Friday and it came out positive but very very faint. I told my boyfriend and he wants me to test just to make sure. I took 2 digitals and one other one and they came back negative. I'm hoping to test positive on Friday if I don't I'm going to give up. This would be my 3 child with my other 2 children that I lost the testing was the same way. What should I do??