Can i get help from fraud reverend from senegal?

i received an email from judith ayuba saying i have been compensated a cheque of 480,000 us dollars.she gave this cheque to father fredrick brown in senegal,i have contacted him and also sent him 1500us dollars.he told me that was enough but after sending this amount he said the bank needs a sum of 3000us dollars to complete the transaction.i think i am been a victim of fraud,i need help to get my money back.please help me.