When I was pregnant, I asked my doctor and she said "Riding in itself isn't going to hurt the baby, it's the falling off that could" I stopped riding at about 3 months, and when I did ride it was on a trustworthy horse and really low-key riding. It's up to you, but just... What if? Ya know? I hate to live my life by that, but when it came to my baby I had waited so long to have, I didn't want to risk it. I understand you make your living riding, so did I at the time. It wasn't half of our income, but a good chunk of it, and I stopped working with horses at 3 months prego too.