It's not clear to me why you believe that a consistent belief that women should have good healthcare represents a conflict of interest.  Sen. Manning serves on a voluntary board promoting women's health, which was both a theme of his campaign and a qualification for office.  He does not receive anything of value for his service, to the best of my knowledge.  It appears that you merely disagree with his position.  You're certainly entitled to, but that doesn't make it a conflict of interest for Sen. Manning.