when to test!!

Kershal • MC 9th oct 2014, BFP 10th Oct 2015

thinking i ovulated on the 21st june, when would use test if use were me?

i get abit test happy and obviously its a big let down seeing the BFN so going to try and wait... my periods are really irregular last came due to taking primolut N so not sure when they will come, doc says they will so if do come ontime will be the 8th july..