No, you are NOT a virgin.
Your finance penetrated your vagina - the fact that "not all of it" penetrated you is absolutely irrelevant. Penetration (no matter whether unintentional, only for a short period of time, or only partially) is considered coitus, and coitus is considered sexual intercourse. Someone that has engaged in sexual intercourse is NOT a virgin.
hi, i am not a doctor, but i would say that the penetration could have broken your heiman. If i were you, i would still consider myself a virgin cause you have not had actual intercourse. Also, when i lost my virginity i had a lot more blood than just a drop. It didnt flow or anything like a period, but it was more than a drop. or, maybe he just stretched you a bit and that caused the drop of blood. again, i am not a doctor...just telling you what i know from my own experience. hope this helps.