Period late

Shanice Whelan

Last period 18th October 2022 app says cycle length 34 and 16dpo I'm 17dpo tomorrow (17dpo) I'm late on my period I'm extremely tired than I normally am and I've had light cramps I'm too scared to test 🥺when do you think I should test? I had the same symptoms when pregnant with my daughter and tested At cycle day 39