Waiting on that day

Had my last and only second depo shot in July of 2012 just starting around the beginning of last year started to get my periods back and it was until about the summer they started to become a little regular and starting this January they are a 28 day cycle now but still not having any luck becoming pregnant. Me and the husband are looking for an advise out there possible before going to a dr. Whatever advise or anything anyone has try we will take whatever help we can get.