Spotting at 4weeks 😫

Anni • 30 y/o , Mom to my 2 daughters with another bub on the way

I got two faint positives yesterday & decided I would test again this morning, but when I woke up a had some spotting 😫😰 yesterday I had brown discharge & today it was a bit more red but still not heavy enough to be a period! Has anybody else experienced this!! I'm freaking out !!!