Does my work need to pay my sick leave?

I work in a restaurant as an apprentice chef and a few weeks ago I took some sick leave on the Monday and Tuesday. I came back to work on Wednesday and provided a medical certificate. Friday was supposed to be my day off but I was called in for the whole day because they needed extra people. When I got payed I wasn’t payed for my sick leave because with my extra hours on my day off I technically made up my required hours. Do they still need to pay my sick leave? My manager hasn’t responded to my messages so I just want to know before I go up to him.