It is normal to take folic acid for more than 3 months without getting pregnant, and you can continue to take folic acid to prepare for pregnancy. Folic acid can prevent fetal neural tube malformation, folic acid can not increase the chances of conception, so take 3 months of folic acid not pregnant is a normal phenomenon, do not have to worry about. Women’s chances of conceiving naturally every month is about thirty percent, trying to conceive for three months not pregnant is normal, may not be in the ovulation time and coitus or too nervous and other factors related to relaxation, calculate the time of ovulation after reasonable arrangements for sex to increase the chances of conceiving. Folic acid can also continue to take in the preparation for pregnancy, do not need to stop. If you have been preparing for pregnancy for more than a year and still not pregnant is abnormal, it is recommended that women check the fallopian tubes and follicular development, ovulation, and endocrine conditions are normal, men should check the semen routine, need to be clear about the causes of non-pregnancy and then symptomatic treatment.