Thrush???

Veronica
Hi ladies!!! I am 38 yrs old and I was wondering about thrush
I just found out yesterday I was pregnant. Even though I should be only 3 weeks. But the test was positive. 
But I have started thrush. Can anyone give me some advise.
I know is really early on the pregnancy. So I am afraid on taking anything. 
I had an mc on 3 rd June at 6 weeks.  So I am a bit nervous. 
Any advise would be appreciate.  Thanks in advance.