I second what @JackJack84 says about brown blood. I absolutely cannot stand the 'it's old blood' thing as that's not necessarily true. I'll share my experiences with you (it's not all doom and gloom even though it starts that way, and my situation isn't very common so don't let the repeated mc I'm about to mention scare you too much).
First pregnancy I had pink when I wiped once, then again a few days later. Then it became continuous and turned to brown, and then red. I had a scan where there wasn't a heartbeat and they said to come back in two weeks to see if anything has developed. The bleeding got worse over the next few days and I mc 4/5 days after the scan.
Second pregnancy similar to the first, except I had a scan while I was bleeding and they found a heartbeat. The bleeding got worse, and I mc 4/5 days later.
Third pregnancy, exactly like the second.
Forth pregnancy, had a bright red bleed at 6.5, enough that I needed a night time pad for the evening, and again the following morning (but nothing through the night). Thought it was over, didn't bother with a scan because I knew it may not tell me anything like the previous ones, plus it was just before Christmas so I just went with it (no idea how!). The bleeding stopped and I had a scan on NYE which showed a heartbeat. Currently still pregnant now at 34 weeks.
Blood doesn't always mean the end. If it is getting worse then that isn't a great sign, but if it does ease up then you still have a chance. But just be aware that if you have a 'good' scan while you're still bleeding, it can still go either way, but you will know fairly soon after if the bleeding continues to get worse.
I've found that in every pregnancy that don't go well, HCP have given me completely false hope. The first time they said I could have got my dates wrong and it could be too early. The second time they said it could go either way but I would know by the end of the weekend if it was a mc (this was a Thursday). It then took a full week for anything to pass (scan between doc app and mc). When there was a heartbeat on the scan they told me 'congratulations', even though I was still bleeding. The third time I had hcg blood tests with my GP to check if they were doubling over 48 hours. They weren't, he said how sorry he was and sent me for a scan to check it wasn't ectopic. Had a scan, saw a heartbeat and again they told me congratulations, only for me to pass the pregnancy a few days later (I was still bleeding). I should have listened to my GP, not the sonographer who said HCG levels don't matter and the proof is in the scan.
Sorry this is so long, happy to answer any questions you may have. I guess what I'm unfortunately trying to say is you won't know for sure for potentially a week, maybe even longer. I really hope the bleeding stops for you and it's just 'one of those things'. I never found a reason for the bleed I had early on in this pregnancy, and so far I haven't had anymore. It's such a shitty waiting game to go through x