Trying to get pregnant

I have not have my period at all. Me and my husband make love like four times out a week. Sometimes weekend. We don't use protection either. Plus my period is irregular periods. So what do you think I should do. Because we want to have baby. We been trying to have a baby for like five years now and we try mostly everything to get pregnant and it seem like we can't get pregnant for nothing. Can someone help me and give me some good advise please