Thanks for your question on Health Care Magic.
I can understand your concern.
In my opinion, you are mostly having
hormonal imbalance and related symptoms.
You already have implant and also took hormone pill.
So this may cause hormonal imbalance in you.
Hormones like FSH, LH,
Estrogen,
Progesterone etc if imbalanced can cause similar symptoms like palpitations, shaky feeling, heart burn etc.
So first consult gynecologist and get done hormone levels.
Avoid unnecessary use of hormone pills.
Don't worry, you will be alright.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.