Possibly Pregnant


So my last period was Sept 8-13 and have not had a period since. I have taken multiple pregnancy test and they have all been negative, I’ve tried to talk to doctors about it but the urine tests are negative and they look at me like I’m crazy and wasting there time. This is what happened when I was pregnant 6months ago but miscarried at 4 weeks the urine test was negative but blood test was positive last time. I am so confused and have been feeling flutters lately along with feeling sick and very tired. I don’t know what to think anymore. Some advice would be helpful if anyone has experienced this before. Thanks.