It is normal for people to worry or feel nervous some of the time but if worry is taking over much of your day or if it prevents you from doing things you would like to be able to do, it is worth seeking help.
Anxiety disorders are so common and so treatable. I really wish people would access help more often as having treatment really can significantly change the life of someone suffering anxiety for the better. Normally within about 3 months, I and my cognitive behavioural therapy, (CBT), colleagues can get you functioning really well and you will have learned new skills that you can take forward with you and use throughout life to manage anxiety. You might need some medication to kick start you feeling better and to take the edge of the anxiety enough for you to do the CBT. If this is the case I only use evidence-based medication and I will talk it through with you in detail to allay any worries, you may have.