Am I pregnant??

Ok so I had a baby January 23rd a little over 5 months ago. My first period 6 weeks later was a little weird but they became regulars after that and back to normal.i had unprotected sex june 25th supposedly ovulated the 26th (had some clear discharge that day) I had light pink and brown spotting all day on the 29th. My period was supposed to come on the 11th. I’m 5 days late no signs of my period coming yet all pregnant tests are coming back negative. I have been having a lot of clear watery discharge for about a week now.and some light cramping on and off since the 29th don’t know what to do. What do you think?