Hi, I Am 39 Yrs Old,in Desperate Need Of Conception,

hi, i am 39 yrs old,in desperate need of conception, i have been having irregular periods since the last 6 months but i didn't really bother much all those while as i thought maybe i might be pregnant for each of those months,but haven't seen my period for the last 36 days now without any symptom of pregnancy is giving me concern as to what is happening to me.