Cum stuck in my body 😆

Normally after we have sex I go sit on the toilet and pee and all the cum comes out. I’ve done that every time for MONTHS. The last 4 times we’ve had sex, I go sit on the toilet and nothing comes out. Until the NEXT DAY!! Usually in the afternoon the next day I feel a big Glooooop and it all comes out 😩😂 WTF?!? Why is it staying in me so long???