Aw Tammy, I'm so sorry to hear that. Fingers crossed.
I had small bleeds with Sophie and with this current baby and early internal scans (5 weeks) to see Sophie with a repeat at 7 weeks to see the heartbeat and with this current one, I had a bleed at 8 weeks and was convinced I'd lost the baby but with a scan the same day as the bleed, there it was little heart beating away
I would say that my bleeds have always been brownish blood and not heavy at all.
From my personal experience, the one time the bleed when from brown to red then got heavy, I did have a miscarriage

I do know that's not always that case though as Amanda said.
Please let us know how you get along.
As you said, the main thing is that you and Mike are back together (Mike's are great people you know

) and you never know, even if this time doesn't work out - and I know how sad that would make you - you're a couple now and there is always a next time! Remember I'm 44 now and fell pregnant easily again this time so there is no rush for you either
Lots of love hun. xxxx