Laser hair removal..

So my bday is today and my mum wants to buy me a savings voucher to have laser hair removal on my legs, she doesn't know though that I'm pregnant yet so is it safe during pregnancy? I'd love to do it! If I let her buy me this voucher for my bday then is be saving 1800$ on it and if I don't then I'll never do it if I'm not able to save on it. But I just feel weird about saying yes to her. She's a single mom and I just feel weird. The last time she bought me something this expensive for my bday she was still married....