A little confused

Hello ladies my story is a little complicated so I need help my last period well normal period was in April on the 10th....May come around and I had a period 3 times on the 8-10th again on the 15th then again on the 28th....then there was June my period was due on the 5th but didn't come till the 15th....now here is July and it was suppose to be here on the 4th but nothing but I've been having pregnancy symptoms throughout all of this but a negative pt