Question about timing pregnancy tests.

So I’m pretty sure I’m 9DPO. I took a couple of tests this morning, and maybe it’s all in my head but I feel like I see super faint second lines. I’ve had headaches, queasiness, lower back pain. Really hoping this is a good sign!

Would you test again tomorrow morning, or wait until the next day? I don’t want to jump the gun but I’m sooo nervous.