Reports of letrozole in animal models have demonstrated that it causes congenital anomalies if utilized all through pregnancy, but there have been no scientific studies of the drug in pregnant Females.eleven, 13 Health treatment providers need to screen Gals with PCOS for cardiovascular disease, like heart disease, often.5 Science Update: https://canpcosgetpregnant46790.blogoscience.com/40199312/not-known-details-about-can-pcos-get-pregnant