Unless your doctor tells you otherwise or you find it painful or have bleeding...go for it! My sex drive has been insane during pregnancy! I'm 33 weeks and still can't get enough! Haha.
Unless your doctor says otherwise, nope! Lol
As long as there are no medical issues, sex while pregnant is fine. Just keep an eye out for any spotting afterward, and if it happens call your doctor (this happened to me...after a couple of days of bed rest, it stopped & both the baby & I were fine). Enjoy the bedroom time now, lol from what I hear once the baby comes we won't get as much. ;-)
if it feels good do it. :)