OK
Natalie, I know you're worried but I also think the people at your clinic are incredibly stupid!!!! First of all, they should explain things more clearly, and secondly, asking if you feel prego is about the most braindead thing I've ever heard! I mean, there are of course ladies who start getting strong symptoms very early but for most it takes a little while - at 5 weeks it's not unusual to feel pretty normal and not pregnant at all. I got my first symptoms at around 6 weeks and they never got very strong anyway. Everyone's different! There may be cause for worry if initially strong symptoms go away very, very early, but that's clearly not the case with you. So forget about that part.
As for the beta, the 2000s and 7000s are numbers where you end up later - think about it, if all goes "normally" and the numbers double every 2-3 days, it really doesn't take long to get there! If you had 7000 HCG right now I would really worry!!!! Again, don't compare your number to anyone else's, as everyone's different and ALL that matters is how the numbers go up. The different sites that quote HCG ranges for each week of pregnancy vary in how reliable they are, but most reasonable sites list your HCG as pretty much anything between 100 and 2000 at this point, depending on your own speed and if you're a late or an early starter. There's no way to know and I never found any help in those.
Now what your clinic probably DOES (and of course SHOULD) look at right now is the rate at which your HCG goes up. Your first number was under 200 and now you were way over 400 so it has more than doubled. How many days in between the blood tests? When I got my second beta back, it hadn't doubled but had gone up by only about 75%. My clinic said not to panic but had to retest in yet another two days. That time the rate of growth was even slower, about 67% in two days. I panicked even more, although the nurse said the RE Ok'd it and said welcome to your first scan in three weeks. Many sites and people had told me my numbers should
double every
two days and they clearly weren't - and on the other hand my very professional and skilled RE said all was well. I did eventually find some sites that said doubling in
three days is OK too and
nothing to worry about - again, everyone is different. Most reliable sites actually seemed to agree that
66%+ rise every two days is just fine. MY RE's attitude and the new info made me feel a little bit better but I still called my OB, who said that actually
even 60% in two days is usually fine - and again, not to worry and not to compare to others. It is when your HCG clearly isn't going up, is going up just marginally or starts coming down that you know there's probably a big problem. Beyond that, HCGs themselves cannot tell us much. Knowing someone else's beta at 5 weeks will NOT help you.
I know you're worried and that's completely understandable. What you need to do right now is talk to your clinic, demand a proper answer and check out your beta dates - did your numbers double in about three days? If so, the third beta is probably just making sure, just like my clinic did. I also noticed that the nurses really don't always know about these numbers and the latest stats that much - I relied on the doctors, stats given by them and my own math skills . Taking a third beta is in no way a conviction - they just want to be very, very thorough. And that's good, right? Forget about being in the high thousands now - you simply don't go there straight from under 200 and if you did,
there would probably be cause to worry.
I hope your numbers look good in the light of what I just wrote - I'm so sorry hun but I cannot remember how many days you had in between the tests. Let me know what the clinic says and how fast the HCG has gone up so far. I hope it's all good. Hang in there!!!!
EDIT: I noticed now your numbers DID double every 2-3 days (sorry, I read your post too quickly at first) so no worries hon!!! That's great. Your clinic just wants to make sure, mine did too - but it's standard procedure - they told me they do it all the time. There are of course no guarantees but if your rise continues like this, you're in the clear!!! I know it's nerve wrecking - I kept asking myself why I couldn't be one of those girl whose numbers doubled in two days or even faster and didn't have to wait for yet another beta, but hey, we're all different, I'm me and as a reward I didn't have to throw up once during the shrt m/s period

I liked being different there

Courage, hon, and forget about the 3000. You'll be there soon enough if you continue at that rate!!!