What does this mean????

So yesterday me and my boyfriend were having sex, when he took his penis out, it all had white discharge, almost like the school glue color, but it wasn’t watery, it was almost like jelly and it wasn’t sticky, my period is tomorrow or Monday, i have been feeling a little off, i have been sleeping too much, sometimes i feel dizzy and on these couple of days i have been feeling like if i was going to vomit. Whats wrong with me? And i did had sex on my fertile days, this was two weeks ago. Help????