You may want to consider asking him to wear a condom later on, though because I've read that a chemical that is also in semen can make you dialate....
Unless your dr has already said no try it and see how it goes it may be a little different so be careful to make sure then if theres isnt any spotting or bad cramps theres nothing to worry about :) im 7 months and have been going my whole pregnancy :) sometimes in a crazy pounce on hubby kind of way :p
I agree with the above answer. Unless your doctor says no. I know it's scary but be gentle but if you're fine in your pregnancy then it's okay.
The only way you cant have sex during preg is if you are high risk and dr tells you not to. Other wise you can the whole time. Wont hurt a thing