Ectopic pregnancy again.. did the doctor misguide or made a mistake please help!!?

this is me very sad today i had already had a ectopic pregnancy 5 years back hence resulting in the rupturing of the left falopian tube..was bleeding a lot internally hence went infor immidiate surgery and the left tube was removed.. now in march i got pregnant which i never knew untill 2 days... the best part is i went to the doctor 2 times in the last month for a chk up and she did all the possible blood testsand ultrasound just to see if i was fineand ready to concieve.i got some pains and did a home test and knew iam +ve met the dr she said i had to rush to the hospital as i might be having an ectopic again, the hospital did the ultrasound and various blood tests which said iam 5 week ectopic pregnant,and i have been given the meth shots yesterday iam still suffering the side effects though, i have to wait for a week still to chk the hcg levels,why did the doctor did not alert me if i had an ectopic?she did a urine test she says it was negative?is that possible or she misguided.