Weird twitching, pulsing, and stress in the lower abdomen. Anyone relate?

Hey all! So you know when you get anxious, and your heart beats fast and you feel like you have to take deep breaths to breath? I have felt this before, but now it seems to have went from my chest to my stomach and lower abdomen. I seem to feel a heart beat/pulse in my lower abdomen (below the belly button?). This seems to happen when I am fixated on my breathing. It is like I notice I am breathing, then I feel the pulse in my abdomen, and then it just feels like I am holding a lot of stress here. Then, usually this area twitches. This is then followed with gas, and the feeling of gas. Though, when this happens, I am not scared. I am just frustrated I can't stop it, so I just try and let it be, and it is in the back of my mind. Does anyone else relate to any part of this? Thank you!

i had same thing couple of times i also dont know what it is but i think it might be due to anxiety and being stressed.