Im always scared to lose my friends?

when i dont see my new friends for a few days i am very down and feel like i did something before that made them not like me....i think ive felt this once before and we went out for a good month and now i feel it again after not seeing them since wednesday.....i get very scared to call them because i feel like theyll get annoyed and when i called one he said he was with his family and the other one didnt pick up...and i get bad thoughts about this...theres times i really believe that i did stuff that bothered them (im just being paranoid i didnt do anything wierd im just saying if i was nnoying without realising it) and that this is intentional but when i think without concern there is no reason they should be mad (because the last time i saw them in person we said bye like brothers but they just never called after