Last 2 periods have been weird please help

Hi ladies! I need some help, okay my period last month was crazy because I spotted once very little and then I was over 7 days late took a pregnancy test negative and then I bled for a day but not a lot well it’s time for my period again and I spotted very little a couple days again and now I’m late. Should I go to the doctor, take a test or just wait it out. I’m 19 about to be 20 and I haven’t had issues with my period since I was really young but Ive been off birth control for 7 months. Thanks ladies!