so many mixed feelings

Vanessa • Vanessa ❤️️💙
I am so confused at the moment with my feelings. Yesterday I was so happy and had a great feeling about this cycle (tho I'm only at my 17th day of my cycle) 
Now tho I'm confused sad and don't now what to think is this normal?
Also normally when we have sex it doesn't hurt but as of yesterday I had a bit of pain. I'm a little worried should I be?