I feel constantly anxious, depressed and not myself?

Hi all, I have been on anti depressants now for around 4 years, and they've been Mirtazapine and then I went on Fluoxetine. I have had anxiety, social anxiety my entire life and got depression once I started working aged 18. 

Anyway I have been to therapy in the past year and have been making really good progress. I started doing things again and even got to a place where I thought I was ready to start working again. 

This past week has been nothing short of awful though. I do not know what has caused it, but I feel incredibly depressed and can't get myself immersed in any activity I do. I also feel constant worry and anxiety and have these obsessive horrible thoughts in my head that are really stressing me out. The thoughts are acts and images of stuff that I would never do like harming a family member. This has happened to me before and it seems to be triggered by stress. Last time it happened my therapist reassured me that it was simply anxiety related and seeing as I'm fighting against it instead of planning to act on these thoughts, it calmed me down. But now its happening again and its just really upsetting. I feel in a daze and can't focus properly anymore. I haven't felt this sad in a long time and nothing has really happened to trigger these feelings. Does anyone have this issue, or know how I can overcome this? My situation literally feels like "one step forward and two steps back" as I was doing really good and now I'm feeling awful again. Thanks

hello,

​ I'm sorry you are not doing to good at the moment. I have experience everything you have described. I started experancing depression and anxiety after I had my daughter. through out the years I had seasons of mild depression and anxiety for no reason. I delt with it without meds until I hit 28 out of no where I started getting severe anxiety to were I coulnt eat and I couldn't think straight , thoughts would come tp my head for no reason and I would freak out. in my head I would cuss at everyone I saw and I had thoughts of hurting my daughter which I would never do. I was even scared of knives because I thought I was going to kill someone with it. but it was just my head and I was sick. I tried everything in my power to to make it go away because I didn't want meds. my whole family is on meds and it runs in my family so I have to deal with it. I was put on meds and it was bad but I got through it and now I'm better. just know you are not alone and I understand what you are going through . so many people suffer and I want you to know better days are ahead and you will be ok!!!!! praying for you. I'm here if you need to talk!!!