Hi, I am new too. I went through the same thing. The good news is that it doesn't necesarily mean something is wrong. The bad news is that you have to wait and see.
I had a miscarriage between my 1st and 2nd child. We were about 10 weeks when we found out that we had miscarried. I found out that I was pregnant after that about the same time, 4 weeks and 2 days. I just knew. I too, had slight bleeding. I was scared to death that I was going to lose him too. The first 2 months were hard becasue I kept bleeding on and off. After 6 -7 weeks they can hear the heartbeat and the chances of a miscarriage after that are a lot less. I cried a lot and was terrified but it turned out okay. He is just over a year now. Good luck and all that I can say is don't panic and take care of yourself.