Trying to decide

Jordan
The worst feeling in the world is getting a bfn. We have been trying for 5 months. I was supposed to start on 3/20 but spotted on the 3rd - 10th which had never happened to me before. And it was really light. Being excited hoping af wouldn't come I took a Test the day before af was due(3/19) it was negative. So I've been waiting for af and nothing so now I'm late but I don't wanna get another bfn and was thinking could my cycle have changed and the light spotting I had at the beginning of the month actually have been a period and I should wait until after April first to test again ?