*TMI*.....
Do you know where your cervix is located babe??? Mine is more towards the front, so when trying, we use "doggy" position, with a pillow under my tummy. Afterwards, I lie down on the bed, butt in the air, for the little swimmers to travel down towards the front. I rarely have too much come out when I get up later......

Also missionary, with pillow under butt, so its already up high before ejaculation can help keep lots in too!!!