Aortic Insufficiency & Endometriosis

I have been taking hawthorn berry to help my heart beat more efficiently and avoid overworking my aortic valve. I am unclear however, if hawthorn berry helps with low blood pressure as caused by the aortic insufficency. Also, because I am rather small (I am 4'11" and weigh approximately 90 lbs.) what should the dosage be?
Finally, I have heard conflicting information on red clover for the treatment of endometriosis because of its estrogenic properties. Can you help clear up the confusion? Is it safe to take or not? I tried vitex for 2 months with no noticeable changes in my endometriosis. How long should it be taken before experiencing some relief?

Hawthorn, on its own, does not necessarily lower blood pressure. It is useful to strengthen the heart muscle and increase blood circulation through the heart for all diseases of the heart. The correct dosage depends on your age and fitness level as well as your size. Older people whose metabolism has slowed down, would take half the regular dosage.
Endometriosis is difficult to treat. I advise you to look for an experienced, qualified natural health practitioner.
Herbalists have different approaches regarding using estrogenic herbs like red clover. There are different types of estrogen. Estradiol is the estrogen secreted by the ovaries, an excess of which causes the tissue proliferation in endometriosis. Plant estrogens do not cause tissue proliferation, and are usually thought to protect against an excess of estradiol; that is, they help to regulate the hormones. Some practitioners encourage the intake of plant estrogens to promote this regulation in endometriosis. Other practitioners advise against the intake of all herbs that contain or promote estrogen.
You may need to take a higher dose of Vitex to benefit in endometriosis. Simon Mills and Kerry Bone in "Principals and Practice of Phytotherapy" (publisher Churchill Livingstone) recommend 2.5 ml. of a 1:2 tincture (1 part herb to 2 parts alcohol) twice daily for endometriosis, taking the first dose of the day upon rising in the morning.