Really confused, I think I'm driving myself crazy.?

My situation is so confusing and the more I think there is no way Im pregnant the signs keep coming up. I had unprotected sex June 2nd and was almost positive I experience implantation bleeding a week later, my period wasn't due for another week and a half so I was just going to wait it out. I ended up getting my period a week early something that's ever happened to me before. So I was okay with not being pregnant, my period was unusual extremely heavy the first 2 days then barely last 2 days after that. Now about 2 weeks after my period ended I have extreme headaches, my body temp has risen, I'm always tired, my breasts are sore, I have heartburn, and extreme discharge. The discharge doesn't smell it just is so much it feels like a period. I feel crazy, but could I be pregnant? Should I take a test?