I am so very sorry that you had to endure all that you have at the instigation of that particular priest.
I am also truly sorry that you’ve experienced such heartless regard for you to be able to receive Jesus sacramentally from others,
especially at the parish you attend. Why you’re being denied the Chalice so you may receive Jesus sacramentally is beyond my understanding, assuming it is the Ordinary Form Mass you attend.
(It isn’t possible to receive from the Chalice at an EF Mass - I’ve been making spiritual communions at my EF Mass for a few weeks now, and back in 2010/2011 when I was sacristan at a OF Mass parish I didn’t make a sacramental communion for 4 months. So whilst not the same as your case, I do understand having to “sit it out”)
I see that you have received a low gluten host
I use that option now but it makes me sick.
I have a suggestion, (not knowing how things are actually done at your particular parish), but as the Chalice isn’t available to you, is it possible for you to receive a quarter of a low gluten host that is consecrated in a separate pyx, and is kept separate until Father gives it to you and first (before he handles normal hosts for the other communicants to receive) . This would reduce cross-contamination. And hopefully by only receiving a quarter of a host, this amount would not make you sick.
And you would still be receiving Jesus whole and be included in the reception of Communion.
P.S. Thank you for identifying which rite you belong to.