Pre-cum?

hello! My story goes like this, pls help me. I had a intercourse on may 2 and he did not ejaculate inside or outside on me. And yesterday (may 16) we had intercourse again and he did not ejaculate inside of me. He ejaculate and release his semen on my boobs. After releasing his semen we stop making love( intercourse) and on may 17, morning we had sex again, still he did not ejaculate inside or outside and it just a minutes of sexual intercourse. My question is can I still be pregnant? Plsshelp me.