there is always hope sweetie
Another thing is not to be too focused on ttc make sure u take time out for just u and Lachlan and just u and DH when u can so as u have other things to distract u (its more mentally than anything but) it will help u conceive if ur more relaxed about it.
Or u could try what I did and go on the mini pill and then come off cos it was making me sick and I needed time for it to be out of my system for the marina to be put it and whamo I fell pregnant (shock of the year)