Help?!

I feel like I keep posting the same questions but I’m just looking for reassurance. Clearly going crazy ...

Almost 3 weeks ago. Shortly after finding out I was pregnant I began spotting. Not enough to even come out on my underwear but it was there when wiping. Usually just once a day. A week ago Tuesday it started to happen more often so at which point I went and had blood work done by HCG levels were 2500 (5 weeks) the following Monday I went back to have blood work done again (6 weeks) and my HCG levels were 6700 ... during this time I have continued to spot on and off. Some days nothing. The last few days when I have went to washroom there has barely been any spotting but what looks like blood in toilet (small amounts but I’m worried it’s tissue) it’s hard to tell looking at it and I’m so obsess with this at this point.

Is it a good sign that HCG has went up? Should I be concentrating about spotting and what small amounts are concerning me that it could be tissue or at least clumpy blood?! Has anyone else been through the same and it turned out okay?! Just looking for other people’s experience. Ultrasound is not booked until October 14th