I am a Mechanical Engineer, not a Biochemical Engineer, but I think I can help with your question since the question of Engineering and Math gets asked a lot and I do not think the requirements for Bioengineering are much different than for the other branches of Engineering with respect to math. Engineers do not need to be EXPERTS in math nor do they need to be in love with math but, they need to be able to do math for a couple of reasons: First, the study of math helps to train your mind to think logically. Thinking logically is extremely important for any engineer because it usually is the key to solving problems (which sometimes involves calculations), so you need to take all of the math classes you can in high school - and be comfortable with them. By that I mean just pass them. You do not need all As, a few Bs can sneak in, but you can't get all Cs and expect to do well in engineering. The math classes will continue in college and will be advanced classes which means you need a good math foundation. The second reason that you need to be able to do math is because at times while either problem solving or designing, you may have to figure things out (calculations) and you may not have a computer program to do that for you OR you may be developing a computer program to perform some task and need to understand what the program is suppose to do.
To determine if Engineering in general or Bioengineering specifically is right for you, I suggest that you Google these two subjects and then Google colleges that offer Bioengineering or other types of engineering to get an idea of what their requirements are for the classes that you will need to take. There is a lot of information on the Internet about Engineering. Or you could contact the Admissions Department of a few colleges that you might like to attend to see what their entrance requirements are for the degree that you would like to attain.