What Are The Chances Of Pregnancy In Women With Condition Of Anovulation?

i am 36 years old female and have a 5 years old son. have been trying to get pregnant after him but to no avail. seen a doctor, he said i have a condition called anovulation. took clomid 3 consecutive months didnt work, took injections which i cant recall the name to help me ovulate, didnt work, took tamoxifen tablets for anither 3 month, didnt work either. please let me know what to do.....