Accidentally doubled my dose

Last night I forgot I’d already taken my 20mg dose, and about an hour later I took another one. I feel okay, a little more nauseous than usual, but I’m wondering if anyone has any advice regarding the dose tonight. Do I take it as usual? Should I take a lower dose or skip it altogether?

I’d ask my doctor but it’s Saturday and the pharmacies have already closed, so Reddit is my best option for now.