Late period after Nexplanon removal

After a year of having my nexplanon implant I got it taken out 12/21/18. I got my period the same day and it lasted 6 days. While on my nexplanon my periods were irregular in the beginning, but for the last few months I had a regular period but it was heavy. According to my fertility & ovulation day there should be nooo way I am pregnant. I have no idea how many days my cycle usually is I have is set up in my Glow acct for 24 days. Im not sure how accurate that is but, I have not started my period yet and according to Glow I am 9 days late. I would not mind being pregnant because I am settled and happy in life. But I am scared to take a test. What should I do??? Wait for period a couple more days or take a test.

No darken nipples, kind of tender.

Cramping for about a week, not a single sight of blood.

Back pain for a week.

Major headaches/migraines

I am open to answering questions!!