Knot in my stomach..

Do you ever get a knot in your stomach or feel your heart rate go up for no apparent reason? You seem irritated or upset about something, but you have no emotion or recollection of being upset or anything. J's phone either isn't working or he is ignoring me. I am going to assume either he is asleep because he is in a car and he is really tired from today. I hate how sometimes he doesn't get my txts. It drives me nuts. He gets everyone else's but mine. I trust him, but little things like him not answering me when he is with K and F, kinda upsets me. I know I have no reason to not believe that he isn't where he says he is, it just upsets me when I don't hear from him. I am not trying to make it so that he has a leash on him. He is a human being.. I don't want him to feel suffocated. To be honest writing this is making me feel better. I love him and nothing will ever change that. My birthday is this week and i am super excited about tomorrow! :) I dont really know what's going on with my birthday day, I am not going to assume I am going to be alone, I really dont think that J would do that to me. He knows my birthday is important to me.