What is wrong with me?

Been TTC 18 months. My last period started Nov 20th and was still bleeding yesterday with brown spotting today so I think it is finally going away now. That is definitely the longest period I have ever had. Now today I swear I am so emotional. I've already cried twice at work from a fight with my brother and then a fight with my husband. I just feel really down. Any body else experience these symptoms together? I have no idea what they mean or what is happening with me.