However, just worrying is not enough.

First of all, you should start from yourself, find out your own shortcomings, see if you have studied these two subjects hard, see if you like them, and so on.

In addition, consult your teachers and classmates around you. They will give you a lot of help.

Why are these two subjects not good? Find out the reason and try to overcome it next semester.

Generally speaking, maybe you don't like it very much, so you usually spend less time on it, so these two courses are poor. However, this is only my guess.

It is true that physics and mathematics are really difficult to learn well. However, they are just difficult to learn, not impossible to learn, so don't lose heart. I believe you can do it.

All right. I hope my suggestion can give you some help.

I hope you can learn well next semester.