Your boyfriend's hematospermia is certainly an upsetting occurrence but is usually of little significance. It is usually a self limiting problem (goes away by itself) without an obvious cause. Workup consists of a good history and physical exam with possibly a semen culture and PSA (prostate specific antigen). If it fails to resolve (assuming that nothing turned up on his physical exam), then transrectal ultrasound or MRI can be performed as well as cystoscopy (looking into his urethra/bladder with a small telescope), recognizing that the chance of finding a cause is still quite slim. Abstinence is not usually prescribed. The textbooks do mention cancers of the prostate, seminal vesicles and urethra as possibilities but these are, again, quite rare.
I do not understand the abdominal lesion which you describe and certainly do not see it as related to the blood in his ejaculate unless he has a clotting problem and he is experiencing bruising in his lower abdomen.
The groin discomfort I do not see as related.
I think that he should see a urologist to get an expert opinion.
Good luck!
S.A.Liroff, M.D.
"This information is provided for general medical educational purposes only. It
does not necessarily reflect the opinions of Henry Ford Hospital or the
Vattikuti Urologic Institute. Please consult your physician for diagnostic
and treatment options pertaining to your specific medical condition.”
You might want to check out this forum. It specifically deals with Blood in the Semen/ Urine. It is more common than you think, but it still throws a few Urologists for a loop.
The forum is at:
http://home.comcast.net/~carlojd/site/