Maybe you should rest for a while, give your body some time to rest and get used to having sex. If not, you could damage your body really badly. Also make sure that you and your partner are really clean before before having sex or you may allow germs to enter through your body which can make you sore.
There is no magic answers here I'm afraid. If you wish to continue having sex, then go see your doctor ... that's the person you should be asking these questions. IF there are any answers then that is where you will find them.