Missed period

So my period is 5 days late. I took the early pregnant test yesterday it said it was negative. My cycle has been had come early and last month it came on late only 1 day. I’m not stressing or anything. I’m in a great place in life but I’m just frustrated bc I know my body and I had all premenustrual symptoms so I knew it was coming on so I’m just confused.....anyone similar or can give me some advice on what could be happening. I hope I’m preggo fingers crossed