Dveniz 50mg for Depression. Talk even.

I have Dveniz 50 mg prescribed as antidepressant. It worked ok initially helped me but later the effects were rare and I had stopped using it. I am starting it again because I now experience severe depression, I cant express my thoughts clearly when I speak I am I either get lost in conversation or search for words to respond. I mean its like off n on when interacting with anybody I respond once and then my brain goes blank, its like thinking and communication doesnt go well with me. Thinking and speaking becomes difficult for me. I usually think it as could be Vertigo but its depression and I feel it every second. cant go out, cant walk, weak and stressed all the time, thinking about how I am doing simple things all the time like how I am walking, is somebody watching me like that when I am outside and I feel stressed and embarassed to talk even. I cant respond clearly while talking n speaking as I take a lot of time to put my thoughts into words and I respond some random unrelated.