Late period 🎀

Staciee
Was due on the 16-06-16 im someone thats never late on her period always 27/28 days every month! Well this month im 2 days late with no signs that im coming on, usually i get a few period spots, dull aches in my stomach, and sore nipples but this month im completly dry all i have is eggwhite mucus which has now stopped! This is my 3rd round of chlomid aswell....but a negative test this morning...whats going on im confused 👎