I am really worried!!!

So this is my second baby! I am pretty dominant with quite a bit, including the sickness I have been having!

So I am extremely sick with this pregnancy and with I throw up my stomach feels like it is contracting it doesn’t hurt but I am only 9w4d!

Then today I am sitting on the couch and all of a sudden my heart is beating sooo hard and heavy I feel the pulse in my throat and it’s sooo fast! I coughed and it went away!

Any one experience this?