Hi, and thanks for your medical question on eHealth's Ask a Doctor forum.
If your boyfriend ejaculated in you during unprotected sex and there was blood in his ejaculate, then it can affect you if it is due to infections such as chlamydia, herpes, cytomegalovirus, and trichomoniasis, which are all STDs. Also other non STD infections such as prostatitis (infection of prostate), epididymitis (infection of epidiymis), or urethritis can also introduce infection into your vagina.
If the blood was due to a tear in one of the veins of the prostate (prostatic varices), then it will not harm you.
Whether you can become pregnant or not depends on whether your partner has infection; if yes for how long; or whether the blood was a result of break in veins and capillaries.
You should ideally consult your gynecologist and get a STD panel done. It is difficult to comment beyond this on net. Hope this helps. Take care!
DISCLAIMER:
"Ask a Doctor" questions are answered by certified physicians and other medical professionals who volunteer
their time on eHealth Forum.
For more information about experts participating in the "Ask a Doctor" Network, please visit our
medical experts page.
You may also visit our Am I Pregnant , for moderated patient to patient support and information.
The information provided on eHealth Forum is designed to improve, not replace, the relationship between a patient and his/her own physician.
Personal consultation(s) with a qualified medical professional is the proper means for diagnosing any medical condition.
