Should I tell him?

I'll try to keep it as short as I can. A year ago before I got married to my husband I told him my story of when I was molested at my friends birthday party, he was of course (as any boyfriend/husband would be) very very upset. He asked me if there was any other incidents that occurred besides that one, I lied and said no, in fear that he may try and find out who they were and do something. but there has been several other occasions all of which were at sleep overs with family and also a time when my cousin had blatantly asked if I would have sex with him. I felt bad for not telling him the truth back then and still do. We've recently visited my mother and she found a piece of my writing that I wrote about another incident (not the one I told my husband about) and brang it up in front of my husband and I. He kept saying that he already knew, thinking it was the one I had mentioned to him, but little did he know it was not. I've had anxiety for as long as the first molestation ever happened (6-10) and certain key words can throw my anxiety into gear and I start to think of things, like when he mentioned hanging out with his cousins and afterwards sleeping over at their house. I don't want to start anything, but I also don't want to keep feeling guilty that I lied to him, he's not just a stranger, he's my husband. This may seem like the obvious but I don't know what to do. Should I tell him or just keep it to myself?