This girl need help!

Hey guys. So I was supposed to have my period on 26th. On 26th I woke up with very painful cramps and the same day I got m tiny amount of brown spotting . after that nothing came. Today it's been two days passed and I still haven't got my period. On 25th may I took a test and it was a negative. So when should I test? I had a good breakfast 2hours back and I still am full but same time I feel hungry. That's the only symptoms I have right now. And before period i normally have super sore boobs. but still nothing I feel yet. Also cm its very less and no symptoms i feel other than feeling hungry. Can Someone tell me. When should it be good to take a test?