Have been stcking to missionary for over 6 months so DH and i have found a few variations.....
Try shifting your bum to the end of the bed, with him standing (or kneeling if your bed is low). I also found that missionary with either one or both (depending on how flexible you are) of my legs up around his shoulders is good too (deeper penetration so his little swimmers get closer to the goal!).
Also if he sits upright on the bed with his legs out in front you can also kind of sit face-to-face with your legs out behind his back then you can lie back - can be a tricky one to start with but also gives both your bum muscles a good work out!!
You can try doggie-style but rest your head on the bed towards the end and for a bit afterwards to encourage the sperm to stay in!!
Most importantly just keep it as fun as possible, maybe stay away from the bedrooom and make full use of the rest of your house/ flat/ car/ shower/ garden!
