it depends on how you feel.
it should never be painful, or uncomfortsble.
just be careful early in the pregnacy to be gentle to avoid spotting. just talk to your gp if any doubt, pain or bleeding after intercourse. it's especially important if like me you had one or sereval mc.
just enjoy yourself and don't worry to much.
peace
I think its ok to have sex up until the very end as long as your not hurting
or your doctor says to stop.Good luck and hope all goes well with your little bean!!!