Hello and welcome to adopteeville!
I am in reunion with my bdad for about 2 months....if I don't hear from him every couple of days I start to panic inside...so much that it shows. This is definitely due to insecurity in the relationship...my feeling that he will abandon me again....ouch!
Also, my bcousins and aunt/uncles...they email me a lot and so I email them back, but every once in a while I'll get an email from one of them and think...that's it I've pushed myself on them and they don't like me anymore or they think I'm a complete cling on or something.
What you're feeling is totally normal, although I know it is totally annoying to be feeling self conscious about your relationships all the time.