my doc said just don;t give if you are gonna conceive in the next 8 weeks - just to be on the safe side - but other than that there shouldn;t be any problems
I can't say that I have ever heard of this....I donate blood as it is such a worthy cause and really the least I can do. My dr always says that you could use my cycles as a calendar that they are so regular, and my infertility is due to tube blockage nothing else. If you are concerned, I would ask your dr.