Question about Miscarriage.

I am ~not~ experienced in this topic, so let me start off by asking for a bit of leniency if I say anything wrong. I'm just curious on some aspects of miscarriage (particularly early m/c) and I am going to just ask them.

I think I had a chemical pregnancy one time. If you look at my chart page here and look at "C11, IUI #2" which started on August 19, 2007, you'll see the cycle I'm talking about. It was my first "triphasic" chart, I got a light bfp on 11dpo and then started spotting the next day with a BFN, only to get my period the next day after that. Was it an early miscarriage or simply a false positive? The test showed an ultra light "+" within the 3 minute window, but it was one of those blue ink +/- tests that have been known for false positives in the past. Did my chart's temps hold even more evidence implantation tried to happen? I don't know. If it was a pregnancy, it was before my uterus was fixed so the immense scar tissue would have been a huge detriment anywho, so I probably would have miscarried anyway.

My point here is with chemical pregnancies, how often do we really ~know~ it was a m/c or not?

I've seen a handful of girls out there who talk about there recurrent miscarriages. But the thing I am questioning is how they really know. Does a "heavy" period mean a miscarriage? I've seen some girls say they are having yet another miscarriage simply because their period is heavy. And they say their doctors are the ones who are telling them this "It's probably an early miscarriage" without taking an hpt or even confirming anything via blood beta tests. And I've seen some girls go through ~a lot~ of these - 4, 5, 6 - and that's all that their doctors say? Isn't the "rule" for recurrent miscarriages that things should be tested out after 2 or 3 of these tragedies? If a doctor just keeps saying "it's probably an early miscarriage", shouldn't these women switch doctors?

Now, I want to be straight about this and explain I am ~not~ questioning their diagnoses. I personally know two women I consider friends to have had chemical pregnancies where they just knew from their gut feeling. I don't think evidence ~needs~ to be there to have one happen. I'm more questioning a doctor's or nurse's opinion that they are suffering miscarriages without even examining them. It just doesn't seem like good medicine to me. A m/c is something so personal and so devastating, I just don't think it should be thrown around without doing some tests. And if a woman was really having m/c after m/c, shouldn't something be done?

I don't really know what kind of testing can be done with super early m/c. Or is testing only available for m/c that happen after something really starts to grow, not just when implantation doesn't "take" like it should.

Does anyone have any input? I know I'm not asking specific questions, but then again, I don't really know what to ask. It's just something I've noticed lately and I'm just not comfortable with doctors just waiving someone's heavy period off as a miscarriage when they really have no idea. I just don't think "miscarriage" should be an overall diagnosis.