Should I be worried?

So for a long time, my cycle was 30 days exactly but recently it’s been a little wonky. 28 days one month, 34, then 30, etc etc. I’m currently on day 31 and eve says I’m “one day late” and I’m scared. I’m having pms-like symptoms, bloating, acne, back pain, etc.

So to give a little back story, my boyfriend and I had protected sex during what eve said was my fertile window, we checked the condom after, all good, no holes, no leaks. Nothin. I guess I’m just looking for opinions from the community because I can’t talk to anyone else and my boyfriend doesnt think I need to worry.

And before someone lectures me about getting on birth control... My appt is already made.