4 weeks brown/red discharge

I’ve woke up this morning with slight cramps nothing major went to the loo and wiped brown discharge it then turned to a reddy colour then back to brown there’s nothing on the pad only when I wipe. Any ideas. I had a mc last month I’m praying it’s not another. Got a docs app today for bloods and to check everything. She spoke about a negative positive on home pregnancy tests but I’ve done 4 different ones so it can’t be that. Please tel me youve had this and went onto having a healthy pregnancy? 😓😓😓