Can I use Clotrimazole 33 weeks pregnant

I have really bad thrush from my antibiotics and it’s driving me insane I CANT STOP ITCHING!!! I’ve been prescribed Clotrimazole pessary tablet and thrush cream, the thrush cream isn’t doing anything at all. Is it safe to use the Clotrimazole pessary tablet?! I’m going out of my mind 😣😣😣😣