For the record, I get urethral bleeding (worse than what you described) when I'd eat the following foods, *especially* during the week I'd be expecting my period:
(5) White vinegar (especially if taken with starches/pastas
It also is a good idea to avoid dry, heavy proteins, since they're acidic. But I guess you know that.
It's also a good idea to eat some greens together with *either* protein *or* starches. Also, citrusy-greens or vinegary-greens may be OK especially if combined with oil and/or eggs.
These foods would help my bleeding:
(1) low-fat yogurt (or yogurt mixed with cottage cheese diluted w/water)
(2) Lots of **black** cherries, only if taken by themselves or else with some plain yogurt. Black cherry concentrate is also good
(3) Food that's cooked or baked with oil & eggs (not hard boiled). It shouldn't harm to add water to the mix as well.
(5) Licorice Tea
(6) Olive Leaf Extract
(7) Pau D'Arco
(8) Olive Oil
(9) Dark green veggies - slimy veggies are good
(10) Parsley, parsnips, turnips
If I were you, I'd research
* foods which aggravate herpes
* foods which irritate interstitial cystitis
* foods which irritate ulcers, colitis & crohn's
* sites on the topic of coral calcium (since some of those sites include acid/alkaline charts. They're inconsistent, but still, can provide you with clues as to which acid foods to avoid. The following URL is sorta good, but I'd still compare it with others to ensure more accuracy: http://www.greatestherbsonearth.com/articles/acid_alkaline.htm
Then I'd be alert as to whether you have eaten any of those foods.
Cranberries, plums & prunes are also supposed to be acidic. And some say oxalates as well (whatever they are...