Change in cat behaviour since iv became pregnant

mummy

Has someone elses Male cat shown different behaviour while pregnant

My Male cat (neutered at the right age )who is about 6 has been more affectionate since iv been pregnant but now there has been times where he as attacked my arms so bad to the point I now have scars not only that but he keeps on trying to mate with my arm and grabbing my skin and refusing to let go please tell me I'm.not the only one ?