Do you think I'm pregnant?

Audrey • Baby #1 due early November x
I ovulated on 14th October and my husband and I had sex 2 days before and day of. My body has been aching and has been feeling different to usual. It's a it early, but I took 4 tests. 1st one was yesterday morning, after I had drank about 600ml of water. It came back positive. 
I wasn't sure because it was so soon after my ovulation. So I took a ClearBlue test which came back negative (I didn't take a photo). My husband suggested I take another one, so I took another 2 to be sure. 
What do you all think? I don't want to get my hopes up because I got the negative test.