To Be Pregnant, To Get Pregnant
する verb
To do pregnant pregnant is to be pregnant.
にんしんする
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
彼女は尿で妊娠反応検査をして、お医者さんから妊娠していると言われました。
She got a urine pregnancy test done and the doctor told her that she is pregnant.