Yes, I've heard of this before. And it is possible to be vegetarian and not eat a lot of soy - I'm allergic to soy and also a vegetarian, but find other ways to get protein (dairy, beans, nuts, etc.). And some vegetarians eat eggs also (not me because of an egg allergy).
Estrogen sensitivity is a difficult issue to deal with - and I have to wonder if there is a liver detox pathway block that is causing or contributing to this for you. Most liver detox pathway blocks can be compensated for with the use of targeted nutritional supplements. Dr. Amy Yasko has done a lot of research in this field. Also, some Naturopathic physicians are able to help with this sort of issue as well.
Were you ever on hormon-based birth control prior to developing problems with Estrogen? I'm asking because the synthetic hormones in the birth control pills can actually lead to a change in the shape of the hormone receptor sites in the body, and thus lead to problems when one's own natural estrogen levels rise. Essential oils (derived from plants) can help correct this particular issue, but the oils must be 100% pure theraputic grade and not perfume grade (i.e., most health-food stores do not sell brands of essential oils that are theraputic grade).
And finally, copper toxicity (drinking water pipes is a common source...) can lead to estrogen sensitivity symptoms and can also cause blockages in the detox pathways in the liver. Zinc supplementation is one of the best ways to deal with this, as well as reducing intake of anything high in copper or that has estrogenic properties (chocolate is a biggie here...).
I hope this helps...take care,
Chronic Lyme, Bart., Gluten & Sulfite Sensitivity, Many Food/Inhalant/Medication/Chemical Allergies & Intolerances, Asthma, Gut dysmotility & non-specific inflammation, UCTD, Osteoporosis, etc.; G-Tube
Meds: Claritin, Domperidone, nutritional supplements, homeopathy, probiotics, etc.