Ok. Last Year I Started Having Panic Attacks Bad. Then

Ok. Last year I started having panic attacks bad. Then a huge one that woke me out of my sleep. Then came the fear first it was bp now when my bp finally came down I relaxed for 2 months it relapsed slowly then my stomach then my allergies which i never had back to my stomach and allergies....my question i heard or read when you have anxiety it triggers symptoms or exacberates it. Cause a lot of times i think i am not breathing or my stomach feels like it is just gonna blow up. Now what I wonder my bp is low or normal now and heart rate so why do these other symptoms exsist still...