is it possible?

I registered for my spring semester, and i registered for physiology, micro, and spanish. I ALMOST have a b in anatomy, and hoping that after finals i will have reached it. and my gpa is a 3.3, however, my anatomy professor says people take physio and micro at the same time all the time, and the micro professor has very good rating (4.4 out of 5) and the physio is okay (2.5 out of 5). however, i spoke to the micro professor and he says that taking the two at the same time with an elective is impossible because i am "struggling" to get a B. however, i explained to him that i got off to a rough start in anatomy because i was still figuring out how to study for the course and about halfway through the semester i finally have it done and now get A's and B's on my exams. I am trying to figure if it will be okay taking them at the same time or what... i already applied to transfer for the fall but the micro professor says that i should dropped micro and take physio in the spring and take micro in the fall and apply in the spring to transfer.