Taking a compulsory christianity class in uni

HUGE TW for femicide, religious trauma.

Context: I have ptsd (diagnosed) and it’s linked to religion. I grew up in a very conservative religious kind of family and have a lot of issues. I also lost someone very close and important to me due to the inaction of a doctor that justified his inaction with his Catholicism. So I was diagnosed additionally with second hand ptsd as I was with her when she died and I have constant flashbacks as if it happened to me.

I go to a Christian university. I know I chose to go to this uni but it’s the only one in the country I live in where I can pursue my chosen specialisation (astrophysics). There are a couple other reasons, including that I got accepted at this uni and it’s one of the best ranked. In sum I decided the positives outweighed the fact that it was a Christian uni. Also when I applied was before the death of my friend and I felt a lot more secure at the time that I didn’t care much about this. I took a study break / leave of absence after this happened but I haven’t healed and honestly I feel I will probably never heal from this.

To the point, I have to take a class that is compulsory to graduate. I don’t mind the compulsory chapel because I can just do homework and listen to music during that, no one pays attention (and most people are just doing their own thing). But the class isn’t the same because there are actual exams and I have to pass it. I don’t actually mind academically studying religion; I actually follow a lot of YouTube accounts that talk about the history of religion eg Esoterica, and I enjoy academically studying religion; also the people I follow are all progressive and tall honestly about the harm done by religion. But this is not that kind of class. It’s very pro Christianity and the prof is obviously biased and looking at the content I am having a lot of trouble with this class. She is also one of those people who act sugary-sweet and wears bows and pearls but will tell you you’re going to hell for being gay.

I want to withdraw but honestly I need it to graduate so I’ll have to take it next semester.

I’m considering using my available absences to avoid the classes with the most triggering topics, taking a beta blocker or something like that before class. Anyone else have any suggestions how to deal with it. My therapist validated my feelings but didn’t have any practical advice. Honestly I’m not someone who sees therapy as a panacea and don’t put a lot of hope in it.

Help please!