GL Miss lightning. I feel for you. I have experienced bleeding in all of my pregnancies so far. I have regularly had HCG levels tested. They are a gr8 indication but you should not always accept because they re rising everything is ok. Lots of people have told me that and that scans are more accurate. But in my experience the HCG levels were always a good indication.

This is my history to date:

1st pregnancy - brown discharge - pregnancy ended in M/C (twins)
2nd pregnancy - brown and red discharge from 5-8 weeks, then started again at 11 weeks. At 11 1/2 weeks I woke in a pool of red blood and passed a clot the size of my palm and as thick as my thumb and I was cramping. I was in hospital for a couple of nights. This was my successful pregnancy. I stopped discharging at 15 weeks.
3rd pregnancy - no discharge until 8.5 weeks when I had a stab in my guts that took my breathe away and lasted for only a few seconds and I instantly started discharging brown (only slight) - pregnancy ended in M/C (twins)
4th pregnancy - I discharged brown and slight red from 5 to 9ish weeks and have been fine ever since and now I am 17 weeks pregnant.

So bascially all can be just fine, but it is very worrying all the same. GL with your next lot of levels. You are just looking for a nice rise, preferrably doubling every 48 hours.