Help ! I made a huge mistake

So my situation is a bit complicated but here goes!
I graduated with a BA in psychology in 2013. I went back as a second BA student for biology in 2014 to become an occupational therapist. But to be honest I hate the science classes ! So after 2 semesters of doing science pre-reqs I applied for graduate school as nonmatriculant student to see if that’s what I want. Now the problem is that I am currently enrolled in this semester and completely messed up due to lack of interest. Its too late to drop so I have to ride it out but I know that I will ultimately be getting D’s. Now the question is that if I already had my BA and did want to get into a grad program will these science classes affect me to get in? Or will My undergraduate Degree be sufficient? Any advice would be great !

All grades will be considered by graduate schools.