BBT chart

My bbt has been 98.0 4 days out of the past 6... AF due tomorrow or Sunday. Feeling hopeless have taken tests every day since Tuesday and this morning I think I saw the faintest beginning of a line but I'm pretty sure it was me wanting to see something. Feeling tired and constipated but I'm also under a lot of stress. Just looking for encouragement :/ TTC cycle 2 after my mc in February which was my first pregnancy that took 14 months to attain! Why does getting pregnant have to be so hard sometimes :(