do I have a chance? loosing hope here

So, Glow changed my fertile window. usually I use opks and glow and everything seemed in line. so this time I figured I don't need the opks, glow has been on point! Well that was a lie, as I filled in my bbt everything switched and moved, hence why It looks like I bd once during my window. Well I'm hoping this once would do but I'm loosing hope. ttc 7 months. Tia!

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