😔 advice please

Me and my boyfriend had sex over spring break which wouldve been march 15th that we did. Last month my period came late. But it came, but it was not like my normal, it was "brighter" and really thin like, not think like a normal period but lasted almost as long as my typical. This month im supposed to start friday. But i started today, but it was like last time again. "Bright" really thin and "oh snap i cut myself and am bleeding bad" kind of. The last week i was really sick with heat exhaustion or a couple days and then a cold. Both times i have been pretty stressed and i know that can be a factor. But i dont know if thats mainly it or if something is wrong. Neither of us are ready for a baby if i am pregnant. But im also scared something is wrong. And that scares me more than having a baby. Im wat to scared to go to my grandparents with it too(which is who i live with). Im scared theyre going to be really mad at me and loose all my trust. A friend bought me a test... I plan on taking that when this "period" ends.. Maybe then i'll have answers.. Maybe this is a growing phase my body is going thru... Maybe i need to destress some ... I dont know.