What are the chances of getting pregnant when the penis was only inserted a few times and there was no real sexual intercourse?

Any time the penis is inserted in the vagina, it is sexual intercourse.

Your chances of pregnancy will vary. Did he ejaculate previous to the penetration? How close was the time frame between him pulling out and ejaculation? If he did, and it was a very short span of time, then the chances favor you being pregnant. If not, then the chances are lower.