Just go to your doc and explain all the problems you have been having, he/she will talk about it and discuss certain medication with you..
This is what happened with me, i was like you and hated bringing up the subject but i knew i had to do it.. Before i went to see the doc i wrote down what i wanted to tell her, i took it with me just incase the words didnt want to come out, you should maybe do something similar
Do you have anything in mind what you would like to take?