Which of the following hormones are produced in women during pregnancy ?
i) hCG
ii) hPL
iii) Relaxin
iv)Estrogen

All of these. 

Human chorionic gonadotropin (hCG),human placental lactogen (hPL) and relaxin  are produced in women only during pregnancy . In addition during pregnancy the levels of other hormones like estrogens , progestogens, cortisol, prolactin, thyroxine etc. are increased several folds in the maternal blood.