What should i expect?

I am a regular person when it comes to my period now for the past 4 months. my last one started on may 25th. its now June 24th and for the past week I've been sick I've been nausea I've been constantly hungry and i'm the type that can go a day with only eating one thing as bad as that is, my **** are sensitive well more like my nipples i get random shape pains where my period cramps would be my belling button hurts sometimes where the ring is, i get tired way to easy even when i have more then 10 hrs of sleep, and a couple days ago i thought i got my period cause when i went pee i wiped and there was some blood so i went to get something for it but when i went to the washroom there was nothing. its been 3 days since that and still nothing.........is it gonna sneak attack me or should i be worried about the one thing i don't know if i want to happen. (pregnant) .... cause i no i should have gotten it this week or by Sunday. but i was also told that that's spotting.