Getting off Birth Control

So i’ve been on birth control for many years to help regulate my period when i was off of it before i would not stop bleeding for like a month straight or i wouldn’t get my period for like 2 months so i just decided to stay on it well i recently ran out and haven’t made an appointment to the health department. well i’ve been off of it for like a month and still haven’t gotten my period so i’m about 3 weeks late from my last period and took a pregnancy test and not pregnant ... should i just wait until i get my period or just get back on birth control!? this is driving me crazy i’m currently not trying to get pregnant just wanted to see if i could get off birth control incase we decided to start trying