I played basketball with DS1 until 14 weeks, A grade level, with no problems at all.

With DS2 I wasn't playing sport at all, as I was quite unwell.

I think it depends on your own intuition, if you don't think it's a good idea, don't do it. I had a doctor's clearance to play until 14 weeks, without that I don't think I would have played past about 10 weeks.

Best wishes.