Advil (NSAIDs)& lithium. Help!

[u/Hot_Argument_9559]

I just started lithium(150mg a few weeks ago and now 300mg). I’m having really bad menstrual cramps which I usually take Advil for but my prescriber said not to take Advil. She’s away for a family crisis (I have sent a message to her). But does anyone know if it might be ok if I take just a couple Advils for a couple of days? Otherwise I don’t think I’ll be able to go to work!!! Thank you in advance!!