period without the period

I'm 4/5 days late for my period and I don't know why because I stopped taking the pill a few months ago because it stopped working and I've had normal regular periods since not taking them I'm not stressed and I'm not pregnant because my partner and I are extremely careful when it comes to sex because we're planning to start a family in 2020 anyway for the the passed 1 or 2 days I've been getting my normal period symptoms my vagina feels like I'm on my period as well, should I be worried?