Sharing Our Innermost Thoughts

Is it normal to feel anxious of losing someone? Considering the fact it’s not because of yourself things are going downhill.
I have been in a relationship with my bestfriend for more than a year now. All of a sudden an incident happened due to which her mother got to know about us. But we somehow managed to get through it. Things were going just fine and smooth until the start of July she started questioning about our relationship. As a young college student I am practical enough to not to pursue a life long commitment. But all I aspire for a good and healthy relationship at present. The question which she arose is that we both belonging to two different faiths will it be sustainable to part our ways without any regret. She started question her religious value that how could she enter into an relationship before marriage and all other orthodox religious aspect one could think of.
Me, as an individual who is raised in a very religion neutral environment, it’s somewhat not possible for me to comprehend what is she going through. But due to all these I m developing a fear of losing her out at this early stage without even committing any mistake which could lead to such a downfall.
She wants to search for solutions. When we were conversing about this all she asked for some time to figure out every aspect. I had to give it to her as in such situation all I can do is support her through out. But soon after it I started feeling more and more anxious.
Now after a month of dealing this anxiety I have somehow managed to get hold of it. But at times when I think too much I feel chills in my chest, it feels like my chest is shrinking and my breath gets heavy. I still don’t know how things are gonna go normal or what conclusion she might propose. It’s feels pathetic to me because I was the one who pursued this relationship. I was aware of the odds but I never thought I had to face those odds at this early stage.
And she being my bestfriend it’s impossible for me to detach her like its nothing because I have feelings for her. These feelings aren’t even sore.

After writing all this I would like to informer reader (if any), I didn’t wrote this just to get some solution. I just wanted to drain some of my thoughts, I don’t even know will it be helpful or not.