Most people would say take clomid three weeks after your last EQ shot. I would recommend you start it after one week. My personal preference, I take my PCT as serious as my cycle and recommend you have plenty of clomid, HGC and liguidex.
Good advice above.
Actually you have a time frame of17 to 21 days after your last injection of eq, you may start Post cycle if you feel like it,the time frame i posted allows the eq to finish doing its job.