It could be a problem perhaps because they need to check your skin colouration when you’re under anaesthetic don’t they? I don’t think you can have your toenails painted either because they check something about your blood through your toe nails. I’d check with a midwife. I know when I had a procedure a couple of years ago when I was preggers, I had to take my nail polish off my toes (well, I had to get my hubby to do it because I couldn’t reach!)
Can I make a suggestion instead? Have you tried Biofresh BB cream? Its a moisturiser and tinted foundation and is beautiful and really gives your skin a lovely glow while not looking too make-uppy (if that makes sense.) Its like moisturising your face but leaves a lovely healthy glow.
You can get it online or call into Biofresh on West st in Drogheda (and mention Mumstown for a 10% discount)
this is what I use when I want a little bit of colour on my face but haven’t the energy for make-up.
HTH and best of luck with the section. Hope it all goes well.