When is the earliest to do the pregnancy test?

So I had a sex on the 22nd , which was the first day of my ovulation. Apparently condom breaked that day. And it’s been two days I have law back and abdominal pain. Also once in a while nausea. I know it is still two early to feel pregnancy symptoms but I am scared. How early I can take pregnancy test? I am still in my ovulation window.