Hot tub fun probably dangerous

So the bf and I were fooling around in the hotub and it didn't occur to me how dangerous that could be and now I'm freaking out. So 
A: I jerked him off in the hotub(so there is cum in there now) and then like 5 minutes later we fooled around with my lady bits in the same water. Is there a potential I could get pregnant or is that impossible? I'm literally freaking out. 
B: is the scariest thing a risk of infection for me? He fingered me in the water. I've done that in a tub before and I was fun, but since this was a hotub I'm not sure. What proper  precautions should I take now? I've heard it could cause a yeast or uti which I've had before, but should I see anyone to get preventative medicine? 
Thank you!!!