Spotting help 🙈

So my periods have always been super irregular. 54,31,40,30,31 . Well yesterday was cycle day 30 and I had a very tiny cramp and then had two drops of pink blood . I was bummed because the next day was hubbys birthday . Well it’s never came back so we dtd which I never do on my period so I was nervous but no bleeding and today I found one tiny small pink spot . I guess this is just so strange to me because I’ve never ever spotted . Once I’ve got it I’ve got it . So what is up ?