Question

My periods are somewhat irregular...I dont have PCOS or anything that would make it complicated to get pregnant besides the iregular periods....I had a period this month it lasted about 4 days....And On the last day i had sex....Ive had sex about 5 times since then....Since we are TTC when should i take a pregnancy test ? I know its early but since im irregular i wouldnt know when to take it...i know i have a tww time but even then it may be a little early too right ?