Bloody scary

I woke up yesterday bleeding and it wasn't just spotting but more like the start of my period ☹

I've been taking progesterone sups on schedule and the bleeding stopped short.. it was like a really short period, only a few hours

It scared me so much. I haven't been able to concentrate on anything since then. I've read about this happening but I thought it wouldn't happen because I was on progesterone already .

I'm going to take a clearblue this morning