Symptoms?

I am having some issues ladies, AF is late this month and I'm not exactly sure when I ovulated either.. But since last Monday when me and my boyfriend had sex I have been so overly emotional, like literally I have cried about everything and that's not me at all.. Secondly I have been slightly cramping as well, my nipples have been kinda sore, I get dizzy spells whenever I go up the stairs at school, I have been extremely exhausted like I mean that, I was so sleepy that yesterday I went into the bathroom at school and sat in the stall and propped my arm up on the side rail and accidentally dozed off for about 7 minutes.. I Have been constipated (tmi sorry) but I am just wondering if anyone of you glow ladies has every experienced anything like this before? Thank you for all of your help! Baby dust to you!!! 😇