Silence after sex💩

Me and my bf dont talk to each other as often as we used to did. Am I overexaggerating? Sometimes I feel like he doesnt love me. We have sex (and meet) only few times a month and after we had sex he stops texting me for a while😰🤷🏻‍♀️ Maybe it's just a coincidence and I may be overstating it. But I'm not sure what's wrong! I lost my virginity to him and we are planning a future together (marriage and stuff). (We're 20) Should I leave him?