So my husband and I are trying for our first baby. I had some irregular periods oct-jan (I think due to stress) and they have become more normal. Due to this I'm not sure when I ovulate, nor have I ever, just went by the calendar to tell me. AF was supposed to come 4\20.. And nothing and it has yet to come. Today 4/24 I started with a very very very small amt of very light brown "spotting" when I wipe. Also some very mild cramping a few times this week. Is it too late for implantation bleeding or is AF making her appearance? Advice or suggestions? I plan on taking a HPT in a couple days, to let at least a week pass.