Can i be pregnant without ejaculation or any type of penetration? i am spotting i don't expect my period until tuesday. implantation bleeding?

Yes: There has been cases of pregnancy documented where the underwear were not removed, but got wet from semen.

Not likely: You are not likely pregnant, but if you are late, you can check a pregnancy test. It sounds like you may need to be thinking about birth control.

Sperm: needs to be deposited inside the vagina to get pregnant. Your spotting is probably a premenstrual symptom. It is little bit late to call this spotting as a implantation bleeding . It usually occurs in a week after conception. You can take a pregnancy test if you miss your period if you still have doubts.