One way is to go to the top of the main page:
Welcome, (your name) then
Statistics tab,
Find all posts by you or Find all threads by you.

There is also a way to Subscribe to Threads if you click directly on My Profile at the top of the main page, will show newly subscribed threads. My Profile, Subscriptions, shows all subscribed threads.
The options for the subscriptions can be changed by going to:
My Profile,
Edit Options,
Default Thread Subscription Mode
to edit how you want to view/receive subscribed threads.

Hope this helps meanwhile. If there are other ways, I would love to know too.
Best wishes!