Feelings of tension, anxiety and stress are not unusual and there are things which you can do to help you manage those feelings.
Learning simple relaxation techniques and breathing exercises can be valuable if you feel that things are getting on top of you. Several organisations and some hospitals offer relaxation sessions to help you learn these techniques and to show you how you can use these at home or elsewhere.
You could also join a relaxation group or class and some people find relaxation CDs are helpful. Complementary therapies or activities such as yoga also help many people feel more relaxed.