Glucose test

So I had a glucose test because my A1c was a little high when I first started prenatal care and passed it with a 130. When I went for my checkup the I had told midwife I was taking metformin because A1c was high and reproductive endocrinologist prescribed it to help TTC. She said that since it wasn't prescribed for diabetes to stop taking it and redo my 1hr glucose test. I stopped it for around 2 weeks and I just did the test today and failed it at 152. I'm kinda upset but I guess it is what it is and have to deal with it.