Ok here is how it works.
Once sperm is in you it can stay alive anywhere from a few hours to 5 days depending on your cm and ph. Your best bet of getting pregnant is to have the sperm waiting for the egg once the egg hits the Fallopian tube. To get this the best times for sex is 1-3 days before ovulation. Now it's not impossible for pregnancy to occur from sex 5 or even 7 days before ovulation nor is it impossible day of or even day after ovulation, but the best chance is the couple days before ovulation as long as you have healthy cm.
But even with perfect timing, great cm, healthy eggs and sperm the odds of successful pregnancy any given month is between 15 and 20%.
Good luck though! Your symptoms sound good so far.