Missed period last month, about to come up on two months now

So I haven’t got my period since July. I haven’t been sexually active between May to now. I got my period in May-July, but I missed August. I assumed that it’s because stress and I did get the flu, but now it’s towards the end of September and I should be experiencing the usual period symptoms as I usually do. Should I be worried? I do want kids but definitely not now.