Pregnant and bleeding

So within the past week I've found out I'm pregnant but yesterday started off with very very light pink spotting then brown spotting then overnight in became a little heavier today still spotting... Just very nervous this could be a miscarriage I don't have any alarming symptoms just bleeding I'm assuming I'm very early app says 4w 5d but wasn't tracking ovulation ... These are my test from this past Tuesday when I found out I was pregnant along with my calendar

Here's a test I took the day before yesterday

Here's a digital I took this morning

And this is how I'm spotting/ bleeding today .. I kinda feel like it's my period but no cramps or pain.. I feel absolutely normal besides the bleeding , flow keeps varying