Emotions keep flying

I’m not sure what is happening. I have been taking my Sertraline 100 mg for almost two years now. Every once in awhile I would have a bad day, however the past three months I have been fighting myself with these suicidal thoughts. I called my Primary and they can’t get me in till August. I’m trying to find a counselor to talk to so I can see if I can get some help there. I am told by every counselor that my case isn’t a serious case. My poor husband has to go through my emotional rollercoaster every day usually resulting in me getting upset with him over something stupid. What am I supposed to do?? I’m at a loss. My diagnosis has been severe depression.