Desperate To Ski

I was just married last week and had a lot of fun dancing at my reception, and took the week off to relax and de stress. I called my Dr.'s nurse today to see if I could ride a jet ski this weekend and she left me a voice mail saying no, b/c the hard bouncing could tear the placenta. I am concerned b/c at the reception I jumped during a couple of songs. Is it possible to tear your placenta just from hopping while dancing? I am 3 and a half months along.

I have had no cramps or bleeding or anything like that, I feel perfectly healthy. I was not jumping hard or anything, and it was not contunious it was just for like a minute, a few times during that night.
Thank you everyone I am just over paranoid, I am planning on telling my Dr. at my appt on tuesday but I don't want to worry the whole time, but I'm a worry wart and your answers make me feel so much better