feel 'me' inside what should i do for the next step

I have two times experience where first time i am doing my sitting meditation. I was so calm i feel like i was 'trap inside the body(don't know how to explain)' i can feel that i was deep 'inside there'. by that time i cannot feel my breathing or heard any sounds from outside. I can 'feel/see' my body from inside. second experience- when i was walking home from work. i guess i was too concentrating while walking. Again i can feel i was again 'inside'(different from the first experience) and i can see(not using my eye) it clearly that my 'leg' is moving 'by itself'. My eyes was open when i walk but i feel like i am not seeing 'my leg' using my eyes.It's a bit freak me out but i was very calm at that time. Anyone out there please kindly help me what should i do when i face this problem again? Thanks