Condom broke no pill

Me and my boyfriend had sex and were usually pretty careful ... But I had two incidents this month. One where he did not ejaculate into the condom but some mishap took place where the condom got lodged in and stuck deep in my vagina and I had to squat and remove it. The other incident was that the condom burst on the head (yet again no ejaculation) and it made a brief contact with my insides for a few seconds until he withdrawed and tossed it. the brand was spermicidal trojan magnums. He argued that because he doesn't have a "leaky tap" aka "precum" its not possible for me to get pregnant even though I was freaking out. Additionally he said his last Partner and himself used withdrawal for a year and she never got pregnant... Any advice? Im avoiding pregnancy. Its also too late for Plan B, as it happened earlier in the month.