I was misdiagnosed with bipolar disorder. Have any of you experienced this?

About 5 months ago I had went to a doctor to speak about my symptoms of depression, irritability, and impulsive behavior 1-2 weeks before my period. She asked me a bunch of questions & I guess some how she came up with the verdict that I have bipolar 2 disorder. She put me on Lamotrigine & at first, it was working. I was happier, more energetic, I had a lot of motivation and I stopped threatening my husband with divorce. Gradually she went up in dosage until I ended up at 150mg.

Well, about 2 months ago I noticed that I started to relapse. I started to become really depressed again before my period. Same thoughts as I had before and I was really unhappy.

Well today I woke up and I just felt like a completely different person. I am really sad, on the verge of tears because I didn’t do as good on my workout today. Also my husband is upsetting me over something that I normally would not get upset at. I just start noticing all of the wrong in my relationship instead of the good.

I’ve read that you can’t be on Zoloft and Lamotrigine at the same time, but I have no idea how to make the switch. I do have a doctors appointment tomorrow to speak about this, but I wanted to know if any of you have experienced this?