How do you combat soreness after while pregnant?

I am now 32 weeks into my first pregnancy and me and my significant other have always had an active life. At least every other day we were having . The pregnancy has gone wonderfully with minimal spotting, no morning sickness or any other ailments. Now that I am eight months, my feet are tired all the time due to work and school and whenever we do it, my gets sore and sometimes its two to three whole days before I can recuperate. Can anyone give me advice on how to combat this? Should we hold off on having so frequently?