Idk what's going on?!?!

Ka

I'm now 1 day late for AF... Took a negative test 3 days ago and I'm scared to test again 😭 Last time I ever had a late period was when I found out I was pregnant with my son. I had my IUD taken out last month, had my first period a week after...but now I'm second guessing whether it was a "real period"...I wanted so badly to get it on the first try since it took 13 months trying with my son. This is hard!! 😭 Has anyone gotten a BFN before AF due, then a BFP after being late???