Antidepressants side effects. 100 mg?

I am having anti depressants zaptra 25 mg and ativan 2mg from past 5 years. I have got married just recently and I am having sexual problems in terms of delayed or no ejaculation. Also sometimes I have witnessed Erectile dysfunction. I want to have a child. I never knew my anti depressant pills could take a toll on my future. No performance on bed is already getting me into more depressed mode. I am also diabetic but the levels are in normal range as of now. How should I withdraw medicines? Should I consult a psychiatrist or a psychologist? I have already consulted one or two psychiatrist but I end up having more medicines on my bench. I would also like to know about taking sildenafil tablets like penagra 100 mg? Does these tablets helps in conceiving. I have heard it causes infertility. Is there any medicines that could improve my libido on natural basis.