failed one hour glucose test... anyone else ?

I am so surprised to just get the call that I failed my one hour test! I've only gained 10 pounds so far, blood pressure is great and I eat very healthy... I only drink water and don't care much for sugary snacks and treats. The cut off was 140 and I got a 154. Now I have to do the three hour test. I'm praying I pass that one ! Not sure what else I can do in terms of diet to improve my number, since I already eat healthy: any tips or similar experiences ?? Thanks in advance !