I have been taking Li Shou diet pills from China (listed ingredients: Tuckahoe, Lotus, Bitter Orange Fruit, Cassia seed, lotus leaf, from generation to generation flower, Poria, Coix Seed, honey, senna,Chinese bitter fruit extract). I also take medication for blood pressure and colesterol. I noticed rectum bleeding; I feel no pain whatsoever, including when I go to the bathroom. Any advise?