all I want is to be pregnant again

after a miscarriage a few months ago am I just being silly at the fact all I want is to be pregnant again. Loosing not only my baby at 3 months but my grandad at the same time and my job because of it all and the stress got to much! I'm not st the point were all that's on my mind is why am I not pregnant whys it taking so long. I'm overwhelmed with stress and depression. how do I cope?