Hi,
Welcome to ehealthforum,
Vaginal bleeding during or after intercourse or masturbation/fingering that you describe is not normal and could suggest chances of infections, internal injury/trauma, cervical erosion or dysplastic changes, uterine fibroids, endometrial polyps, endometritis, ovarian cysts, hormonal derangements affecting the bleeding pattern, anemia etc. If fingers had the semen or pre-cum, (and if you were during fertile days), at the time of sexual contact, then chances of pregnancy are also possible. It is difficult to comment on the cause for the abnormal vaginal bleeding that you describe without examining you. The exact cause can only be made out after careful evaluation. Visit your doctor/gynecologist at the earliest for thorough examination and further evaluation to look for the underlying cause for the bleeding during or after intercourse that you describe. Treatment as indicated (based on examination findings and investigations results) would be started to help you in controlling it. Consider being in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Drink plenty of water. Take adequate rest.
Take care.