My boyfriend usually calls me/text me all day, does this sound odd?

My boyfriend usually texts me all day , and calls me early in the morning before he goes to school. We text all day while he's in school, after school he calls me before he goes to work. and texts me during work. calls me on his break. & calls me when he's on his way home from work. and we talk all night. then the cycle repeats , but now he barely texts & call me . I think he's cheating on me . He has a lot of facebook groupies & is always accusing me of talking to other boys . am i just worrying too much ? whats your opinion ?