Weird Rusty Discharge, need advice.

Kaila
I'm 13 days late today. Been taking tests every couple of days, first thing in the morning and they're all coming out negative. Today I skipped testing and when I went to the bathroom, there was a quarter sized spot of brown blood. Put a panty liner on, but there's only been one little spot. When I wipe it's there too, but it's not bright. It's rusty colored. Not as dark brown but still reddish brownish. I've been feeling so tired all the time. Killer headaches, and sore boobs, with extremely sensitive nipples. More frequent urination lately. I'd very much love to get a BFP. Any advice? Any ladies have this kind of thing and have a healthy pregnancy still?