Yay! Congratulations!!!!
Do a search in the threads and you'll find lots of info. The most important thing is to listen to your body. Everyone handles pregnancy differently and every pregnancy you have could be different too.

I was one of the lucky ones, I rode my road bike into the 9th month. On days I felt shaky, I did spin class.

Enjoy the freedom you have now, soon you'll be trying to figure out how to do a group ride while towing a burley . . .