Hi Amanda...
I peeked in on the April board and noticed you had posted there... I left ya a message there but I'm going to answer you here too.
Anything is possible... you could be pregnant and having a little bleeding from implantation or just bleeding. I don't know for sure your situation tho, I see you had an early loss in February and I'm sorry to hear that
There are allot of women who suffer more than one loss in their lifetime, sometimes more than one before a full term pregnancy... I don't want to stress you out of scare you either.
Your best bet is to kick your feet up and rest, bed rest... call your doctors office and talk to the triage nurse. From there you and her can decide what to do like getting a series of beta hcg blood tests set 2-3 days apart to see if the numbers are rising (#'s doubling every 48-72 hrs) and then go from there... like an u/s right around 6-7 weeks. If they do it earlier they can see the endometrial lining but not much else as in with my case before I truly knew I was losing my babe in July.
So please stay relaxed, getting stressed and worked up isn't going to make anything better just harder on you. I know it's easy to say, but I'm having to follow that very same advice because I found some news out today that I'm also pg but still having some bleeding / spotting from my loss. (I haven't gotten AF yet that I know of, too early)