I mountain biked up until 6 months pregnant. I work with a sports doctor and she gave me the go-ahead. But she said 6 months was it. In fact, I did an Adventure Race with 11 miles of single track riding when I was 5.5 months pregnant. The road bike I could do through 'til the end.

My thoughts are as long as you take it easy and listen to your body, you should be good to go

Congratulations!