Where's AF?? 🤔🤔

I haven't had my period in a lil over 30 days && I'm a lil worried my periods have been quite regular for the past few years I've always had reg periods that came on time . I am not pregnant I took a test last month I had what I thought was going to be the start of my period where I spotted 2 days on && off which was the 5th && now I'm waiting for the real thing to come but it's been 34 days . Has this happened to anyone?? Could it just be my period changing ??