Metranidazol 500 / trichomoniasis and Pragnancy

My wife and I went to ER last week because my wife had a 5.5 cm ovarian cyst and we thought
something is going on with the cyst . We got there doctor ran an Ultra sound and some other test
and to our surprise he comes back and says :

1. You are not pregnant
2. you do not have a cyst .
3. you do have trichomoniasis parasite  

We were both shocked . Doctor has given both of us 10 days worth of antibiotics ( Metranidazol 500 mg )
twice a day . Of course for that period of time we can not have sex etc.
Now all of the sudden while she is taking this drug we find out this morning that she is pragnant .....
How in the world could they have missed this ????  

I don't know what to do , I read something online that that drug is ok to be taken in early stages of pragnancy
than I called my pharmacy and I got totally opposite answer.

??????? I am confused please help me

Can my baby be born with some kind of a disease ? or retarded etc ? Should she stop taking this drug
she only has one more day to go on it .

[tarajanes]

This drug is  safe during pregnancy,you will always find mixed reviews on any drug.there is also always a risk for birth defects,no matter what you take. i myself was put on this.for infection in my current pregnancy.as for them missing out she was pregnant,in the early days a scan wouldnt show anything.Hcg levels need be at least 1000 upwarsd.so if she is early days.if she has 1 day left then finish he course.or problems wont have been treated.

[MeggerPiez]

I was at the er aswell for faintness and cramping while pregnant, they did both urine and blood test which proved I WAS pregnant and I was given an ultrasound and a pap test. today I got a call back that confermed I had Trich, I was given the perscription for it and they say it is alright to treat it. they would rather treat it then risk preterm birth and low fetal weight.