Nhs bursary

So I’m very confused about this. So basically I’m studying nursing and I’m in second year and I’m on nhs bursary in wales which means when I graduate and become a qualified nurse then I have to work as a nurse in wales for 2 years because of the bursary. But I want to do a masters degree in something that’s not nursing related. Would I be allowed to do that or do I still have to work as a nurse for 2 years then once those years are up I can do the masters degree or can I do the masters degree straight after I’ve graduated 🤔 this is confusing for me.