Ando me siento mal, el doctor me receta unas medicinas muy buenas. question 2 with 1 blanksi el dolor de cabeza es muy fuerte, toma una asprina . question 3 with 1 blanklos de una torcedura son enrojecimiento y dolor. question 4 with 1 blankcuando mi hermana se rompió la pierna, le tomaron una . question 5 with 1 blankcreemos que maría está embarazada . tiene náuseas y mareos. question 6 with 1 blanklos antibióticos que me recetaron la otra vez para la infección no funcionaron.

ah, so ustedes and nosotros are my 'go-to' if i am using spanish mainly in the states? interesting, but still slightly confusing, haha."

it seems that you are a little confused about subject pronouns. yo=i, tú/usted=you, nosotros=we, ustedes=you(plural), ellos/ellas=they.

in the case of vosotros, it is an informal replacement for "ustedes" in spain. similar to using "you all" in english.

even though it is not generally used in conversation outside of spain, it is used many times in literature. i would suggest having at least some familiarity to that form, at least to recognize what it is.