Please comment help help help

Idk why I’m so worried about being pregnant, when I done everything right. I used condoms from start to finish when me and my boyfriend has sex 3 times this month which was protected. On one day we did it twice in one day in fertile phase and one time after and He didn’t ejaculate inside me not once. I had unprotected sex one time in my life and thought I was pregnant then so why am I so scared I am now?? When we used it correctly without any holes or tears. Period is two days away and I am bloated, very emotional, nauseous, sore breast. I just don’t know what to do I’m scared🥺😣please comment, no rude people please. I’m young and never was taught about how pregnancy works in school. My boyfriend always says I’m fine and I’m overreacting. And one my friend always have unprotected sex and never get pregnant and she does not use any type of birth Control .