Thought I was prego from the symptoms

So today I went to my ob she was supposed to do a blood test and abnormal tests since the last time I got my period was aug 25 but I told her my symptoms and got a peak on sep 22 for o and she said that doesn’t really matter because it’s just my hormones playing tricks on me and my symptoms could just be my period or nothing. I never had any of these symptoms before a period. Can anyone give me any advice or no anything about this? She never did the blood test because she said it’s a waste of time and no point