Missed period

Hello everyone I'm starting to worry about what's going on Ive missed my period for 37 days now 3 days ago I spotted one time and now yesterday I spotted once too I've taken test all negative I stopped taking my birthcontrol a couple months ago has anyone else had this happen to them and is thier anything I can do to help me I'm thinking about taking vitex I've done alot of research on it has it helped anyone else?