If on day 21 I showed that I ovulated but my periods are usually later because of pcos and not always ovulating, when should I take an at home pregnancy test? I think I'm reading into so much with my body but I noticed light cramping on day 23, usually have regular bm and now they have been harder to go, noticed I get dehydrated or thirsty more, sense of smell heightened and loss of appetite. I'm d o hopeful but don't want to see another negative and needing more provera and clomid!! On cd25, usually cycles are 35days, So what cycle day would you test?