That is a tough situation.
I am not sure what your question is here.
Is it about the symptoms.
If you still feel terrible, you might need treatment for anxiety or depression.
Your doctor is a good starting point for this.
This can involve medication, but can also involve therapy.
Is it about are you right to end this? Yes of course. It sounds like you were dealing with someone in a world you do not want to be in. It sounds like he was trying to pull you into this against what you want, and manipulating you to do this, using your falling in love to do it as well.
That is not honest or on the up and up in any way.
Right now you need to take care of you. This is like a version of post traumatic stress disorder.
Get some professional help for that: PhD clinical psychologist. Ask, your doctor for a referral.
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