What are chances of being pregnant if he ejaculated and then fingered her? (he said he did not have sperm on his fingers)

See comment: Depending on your menstrual cycle, if you were in mid-cycle range, there is always a posibility of pregnnancy if the partner ejaculated.No sperm on finger has no relevance or meaning.

Possible: If he is mistaken and pushed some semen into vagina if he ejaculated on your vulva. No chance of pregnancy if te ejaculated elsewhere ; finger was semen free.