Anxiety, fear and panic. Any advices!

Sir/Madam, i am experiencing fear, anxiety and some times panic attacks. Earlier I used to be very strong and brave and used to face any problem single handedly and from since December 2018 I felt a sudden change in me that I cannot go out alone for far distances from my home, but for shorter distances I can go alone. It seems to me that i not like before I am. But I am strongly Dezire that I want to come out of this problem as soon as possible. And another thing is I am some times experiencing rapid heart rate while I woke up in the morning. And started checking my heart rate many times in a day. And I also have a bad habit of searching about health problems in google and worry. Please help me in this and give any advices regarding this problem Thank you