Normal Discharge ?

Lately, I've been noticing changes with my vaginal discharge. Most of the time its very clear and or have a yellow tint to it.. it'll dry a clear white or a whiteish- yellow in my underwear which I've read is totally normal for both. But this morning, I've woke up wet down there and grabbed my mirror to see what was up and I see this!

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Idk if it's cleaning itself or preparing for my monthly cycle which is going to happen 10 days from now. or is it a Yeast Infection ? it looks yellow but in the light its clear! it's kind of tacky but it stretches as well.

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