If a woman experiences dam makkah, she should wait until the bleeding subsides before engaging in intercourse. All other forms of physical contact are permitted since she is not niddah. There is no other waiting period necessary.
If the bleeding is expected to continue for some time, and the bleeding is only intermittent, she can check for bleeding by wiping externally with toilet paper (not immediately after urinating). If the tissue is clear, she can go ahead with intercourse. If there is staining on the tissue, she can try again the next day to see if the staining has let up.
Please feel free to get back to us with any further questions.
B'Hatzlacha!