why do I feel like this

on 14+4 and barley showing at all I literally have no interest in doing anything at all I just sit in the house all day then feel bad becasue I didnt do anything when I'm around people I instantly get a attitude and dont wann talk to anyone even my parents my boyfriend has noticed it and I have no explanation as to why I'm feeling like this my mom even calls me grumpy I'm not trying to be grumpy I just get this feeling and I don't know how to get rid of it. has this happened to anyone if so what did you do to fix it please help I dont wanna feel like this anymore