Trying to Conceive

Hey group I’m 28years old. This is embarrassing but here goes nothing. So my husband and I been together for almost two years. I have 7 kids from my previous marriage. My last child is 3years old and my oldest is 12. My new husband and I been trying for his first child for a whole year and nothing. I know what a lot of you thinking I have had to many as is I really don’t need anymore but that’s your opinion. God said be fruitful and multiply so please keep your rude comments. So tell me is it me. I’m getting discouraged and my husband is starting to get depressed I don’t know what else to do