17 and pregnant again...

Tatum
I recently had a miscarriage a couple months ago...i started taking birth control and i followed every instruction i was given and still ended up pregnant again. Im 8 weeks pregnant now. My parents don't support me and kicked me out bc my boyfriend is black (and i am white). Therefore i grew insanly close with my Nana who was very supportive and there for me when i was in the hospital with my last pregnancy. I have my own place now but i spend alot of time with my Nana. And within the last few weeks she keeps noticeably staring at my stomach and has asked a time or two if im pregnant. We both just laugh it off and i change the subject. She was pregnant at 15 which is why she was so understanding with me the first time. I know she already knows im pregnant but i just dont know what to do...i dont want to tell her in case i miscarry again but shes my main support system 😩😩 please help 😔