First pregnancy
age 28 second at 38. I rode trail right up until a couple weeks before
delivery both pregnancies. Trusty horse, falling off never crossed my
mind. Never bothered to ask the doctor if he thought it was
OK. It was right for me. Granted I'm a FW and only gained about
25 lbs. Both girls healthy & sat on horses as soon as they could sit
up.
Do what feels
right for you. You know yourself & your horse better than
anyone.