I dont know whats wrong

Bri • twenty one
Okay so my last period was unscheduled in may. According to glow I was scheduled to have a period july seventh but I didn't have one its been three months since I've had a period not that I've ever been regular but I usually was only a week late according to glow. I've taken five tests in the past month all came out negative and I still havent spotted or anything. My boyfriend said I need to go to the doctor but I don't feel like anything is wrong I'm just really late and I get really light headed, dizzy, and I get sick everytime I eat anything. Only like three people know and I haven't talked to my mom about it yet because if I am pregnant I won't have a place to live anymore since I live with my grandparents. I just need advice right now so if anyone has been through the same thing please tell me what to do or what my next step would be. Thank you.

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