When do I take a test?

I'm pretty sure I was ovulating last week. When is it time to take a pregnancy test?
I'm not really getting any symptoms apart from having a constant headache (which I don't think is even a symptom) and feeling sick if I don't eat often.
Update: I should probably of mentioned that I don't know when my period is due.

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors