According to the Natural Medicines comprehensive database of research on turmeric, it states that the anti-inflammatory compound in turmeric, curcumin should be used with caution when trying to conceive, however turmeric itself wasn't tested and these studies used curcumin extracts and were done on mice/rats and outside of living organisms so we cannot say for sure how consumption of turmeric would affect fertility.
INFERTILITY: Evidence from in vitro and animal research suggests that curcumin can decrease sperm motility and density; cause degenerative changes in the seminiferous tubules; reduce luteinizing hormone (LH)-stimulated production of testosterone in adult Leydig cells; and reduce fertility when administered orally - in rats. Until more is known, use with caution in patients trying to conceive.
PREGNANCY: LIKELY SAFE ...when used orally in amounts commonly found in food. LIKELY UNSAFE ...when used orally in medicinal amounts; turmeric might stimulate menstrual flow and the uterus.
LACTATION: LIKELY SAFE ...when used orally in amounts commonly found in food. There is insufficient reliable information available about the safety of using turmeric in medicinal amounts during lactation.