Test again?

Alaina • Ttc my third and my husbands second. Wishing the best if luck to everyone out there!
I'm 13 dpo, glow suggested I test today and when I did the test was invalid. Very frustrating. I've felt nauseous almost every day for 2 weeks and have frequent urination. I hope it's not a coincidence. I don't know if I should test again or wait until tomorrow morning gor fmu. My period is due the 18th

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