## Calculations say I'm 6 weeks pregnant but due to bleeding we've had 2 ultrasounds already and haven't saw anything. . . . .is this normal?

So on June 28th I took a home pregnancy test because I had been sick to my stomach every day all day for a week. Although I had my period June 13th (or what I thought was my period; I had light bleeding the first 2 days and spotting the next 3 days which isn't normal for me) I still thought I could be pregnant because we have been trying for the past year. I took the test at 6:30 that morning to make sure my urine was at it's peak. It showed positive right away. I took 2 more that day which both showed up positive. Over the next week I would take one every few days just to make sure they was still saying positive (as I was in shock that it had finally happened; even took one 2 days ago that said positive just a few seconds after I peed on it). We went to the doctor on July 9th for an ultrasound because I had started bleeding after sex the Saturday before (I now think I may have been one of the unlucky women who have their periods while pregnant) and our midwife had suggested we go in just to make sure everything was okay. They done an abdominal ultrasound and didn't see anything so they done a vaginal ultrasound and still didn't see anything. The doctor told us to come back in 2 weeks and he should be able to see something by then. Well that appointment was today. By our calculations and all the online calculators I have done they say we should be exactly 6 weeks today. He done a vaginal ultrasound didn't see anything, done an abdominal ultrasound didn't see anything, so he done another vaginal ultrasound and still didn't see anything. He told us it could be 1 of 3 things; we aren't far enough along to see anything, it's an ectopic pregnancy, or it started and just fizzled out. They drew blood and we go back on Tuesday to see what my HCG level is. He said it has to be at least 1000 to 1500 before he can see anything so if it's less that's why we are not seeing anything and if it's more then he has to assume it's ectopic. Has anybody else had this happen or been in a similar situation? (p.s. all the ovulation/due date predictors say with the first day of my last "period" being June 13th we shouldn't have got a positive test until July 12th but we got one on June 28th. Could we have just been one of the few to find out as soon as it happened?) HELP!!!!!!!! I have 2 other children with whom I had perfect pregnancies so this one is taking a toll on us.