Hi ladies...Anyone gone throught something similar?? If you have- how did u deal with it?

I had always enjoyed sex in the past. Always. Porn, toys all that stuff. Loved it. Still own those things.
Never slept around- was aways sex in a relashionship kinda thing.

Now im engaged and finding myself not wanting sex. At all. Its driving my fiance insane. Its not like im attracted to someone else...Not like im looking to get laid on the side, not like im attracted to woman.
I just dont want it. I dont want to be touched, kissed or anything like that. When he does it I find it to be extremely irritating.

I do work a lot and I have been under a lot of stress lately. He was understanding at frist but now he sends me on guilt trips about it. And that pushes me away even further. He tells me that I dont even try. Thats true..I dont. I dont want to. Plain and simple. I find it to be actually repulsive right now.

Now here is a disturbing part- I am able to have an orgazm my myself with no problem. But I dont want sex. Dont want anything to do with it.
And im fine with no sex. Completely fine. And he is ( duh), willing to wait but he is upset that I dont try. But I dont want to force myself either.

Not sure what to do. We dont have any kids, nor do we plan on having any.

Any advice would be appreciated.