I'm a 38year old female mother of one. i have high blood pressure & hypothyroidism. i want to start taking vitamins but which ones do i need?

None is OK.: If you eat a regular diet and are not planning on being pregnant any time soon you need no vitamin or supplement. If you plan pregnancy then a prenatal vitamin would do just fine. Neither your thyroid nor the BP will benefit from vitamin supplementation.

Vitamin D,C, E ;...: I advise all adults to supplement with 5-8000 iu of vit d in fall ; winter (year-round if you don't get much sun in summer)- low d can cause hypertension: http://www.Medicalnewstoday.Com/articles/262007.Php many supps can help lower BP including vit. C ; e ; magnesium. I advise a good multi with extra c, e, d ; mag. Coq10 helps too. Iodine ; selenium can support thyroid. See http://bit.Ly/1i7ogys.