Some help about meditaion??

[elibeli]

hello
iv start to meditate watching the breath as part of vipassana meditation and mindfulness for about a Month (i am not new to spirtuality)
but i noticed that During the day i aware of the breath almost all day and that make all kind of Uncomfortable sensation in my all body and in my Stomach
it look like the breath take a big part of my daily routin as i aware almost all day and have felling like control the breath stress it the Stomach,Weakness and so on,i would like to know if its normal and if its becouse of the awarenss of the breath
what should i do about it should i just keep practicing? is it normal?

thanks