No intercourse after transfer!
you can certainly try before that,,,, but from my experience, the more follicles I had - the more uncomfortable I was and sex was the furthest thing from my mind. The closer it was to retrieval (ie the bigger the follicles) I was very sore and bloated, and with retrieval it was worse - very sore.
After transfer, you are not to have any 'contractions" of the uterus (sex, heavy lifting, exercise.....