after the bathroom is there sperms left?

Hi, and thanks for your medical question on eHealth forum!

Yes, normally post ejaculation, most of the semen forms a pool deep inside vagina and some of it flows out. If you have problems conceiving then it could be that the pelvic tilt is not correct. You can try having intercourse keeping pillows under your buttocks and lying down that way for half an hour after it. Pulling up your knees to the abdomen after sex for few minutes will be of additional help. Hope this helps. Take care!