is it normal that i send him msgs again and again?

I hope i read this successfully, but it sounds like you send him messages repeatedly? By him, im assuming you mean your friend or boyfriend.. just stop sending messages over and over. That becomes a big, annoyance and pretty crazy. I hate when i dont answer the phone and the person calls over and over and over, i finally answer and its somethig stupid like 'hey you busy?'
I would just stop... Not normal, but very annoying.