Frustrated

My husband and I have been TTC since our wedding, a year ago. I started Metformin in October and had clock work periods for the first time in a very long time. Right down to the day. I’ve been using Clearblue Digital OPK’s since I started TTC and never got a “solid smiley” until this month, on the 8th. We had BD the night before that and made sure to do the same the next two nights. Well, AF has not shown herself this month. And every test I’ve taken (3 at this point) is a BFN. I’ll be a week late on Wednesday. And I’m so...angry and frustrated and sad right now. Has anyone else had a similar experience? What did you do?