Mom keeps saying I’m pregnant


So my last period was September... no period for. October and so far none for November. Doctor did a urine test and it was negative. She said “your not pregnant but I’m taking you off you blood pressure pill cuz it’s BAD FOR THE BABY” I took another home test today and it was negative I’m having a lot of unusual cramping and I’m sleepy and hungry a lot. My mom didn’t find out she was pregnant with me until she was between 4-5 months pregnant all the test kept showing up negative with her too.. what do u think? She swears I am.. what should I do