Hi,
1. Infection in the vagina can cause bleed itself or lead to dryness and cause bleeding
2.
Hymen break can cause bleeding for few if its 1st-time sex
3. Allergic to semen (use a condom to identify)
4. Dryness – infection, improper foreplay,
dehydration, age factor,
hormonal imbalance
5. Forceful sex
6. Normal menstrual bleeding (you may have early periods)
7. Benign or malignant polyp.
8. Foreign bodies due to unhygienic sex method, sex toys,
9. Anatomical abnormalities
10. Bleeding disorders
11.
vaginismus - fear during sex causes muscles in genital to contract and cause pain
12. Eczema
13. Deep penetration in few positions during sex
14. History of surgery
Kindly share more details regarding above reason, we can work on diagnosis and management.
Hope I have answered your query. Let me know if I can assist you further.
Take care
Regards,
Dr S.R.Raveendran, Sexologist