Am i pregnant? I'm so worried. . . ?

I've had a highly increased appetite. I haven't had my period in a month and three weeks but I took a test a week ago and it was negative. I've also had irregular periods in the past, having them every three months. But two days after me and boyfriend had unprotected sex I had a lot of clear discharge. I had to go to the bathroom like three times cause I felt so wet. I've also been more emotional than normal. And been tired. is there a chance I'm pregnant? or maybe just starting my period. Any advice would be highly appreciated.