Hi Kady, welcome to AS.
I think you will soon find by coming here that there are many others who have the same doubts, fears, emotions and concerns as you do.
Those feelings that you have of anger, uncertainty, guilt and shame will be recognisable to a lot of others here including me.
Just take things slowly, its step by step from here. I think if your partner truly loves you then he will understand if you decide to tell him.
But just see how you feel and don't be pressured into doing anything if you are not sure.
There is always someone here ready to listen.
I a