Hi April :wave:
The best place to work out how far you are along properly is an ultrasound (so I believed

-)! If he/she was worried I'm sure they would have sent you if they have shown worry & have not sent you for an U/S at the EPU I would seriously consider asking them to do so!
Your HCG level appears to be FAB
Accordingly, the concentration of Human Chorionic Gonadotropin (hCG) rises rapidly, frequently exceeding 100 mIU/ml by the first missed menstrual period and peaks in the range of 30,000-200,000 mIU/ml by 8-10 weeks into pregnancy.
0-1 week: 0-50 IU/L
1-2 weeks: 40 - 300
3-4: 500 - 6,000
1-2 months: 5,000 - 200,000
2-3 months: 10,000 - 100,000
2nd trimester: 3,000 - 50,000
3rd trimester: 1,000 - 50,000
Non-pregnant females: < 5.0
Postmenopausal: < 9.5
Although you have worked your dates out from your last period (I assume) you never actually know when you have ovulated unless of course you charted or used OPKs?). It's not always the middle of the month as most information will give you. Ovulation can take place twice in any one month also.
Good luck!
x