Please HELP!!!!!!!😭😭

So last month after my period we did almost every day or every other day. We didn’t miss. Single day. I was hoping March was our month. Each day I got excited thinking I might get pregnant. And guess what today I got my period. I am so pissed 😠 right now. I came this morning after night shift and I am just crying. I don’t know what should I do? Not sure what are we missing? I am more up sad than My husband. Please help me. I am thinking to buy BB thermometer so I know when I am ovulating. I am so disappointed and loosing my hopes. I want to get pregnant And god doesn’t listen to my prayers. I am just tired and need help. I had miscarriage in December. I can’t stop thinking. My husband sister she got pregnant. I am really happy for her but every time I see her. I feel for myself disgusting and embarrassed. I feel like nothing helping us and wants to delete this app. Please help.