insecure ://

so my boyfriend left over a month ago for usmc bootcamp. since he's left i've been kinda sad and a little less motivated, especially since it's summer. when he left i was about 130-135 lbs and now i'm 142/ish. i'm really upset bc this is the heaviest i've EVER been. and in a little over a month i'm supposed to go to san diego with my boyfriend and his family.. and I' whist really not ready to be in a swimsuit around them and ughhhh. :(((