Never Had a Regular Cycle

Mámi
Ok. So I've never had a regular cycle but whenever I do get my period, it lasts for a solid 7 days. During the end of September, I got my period from September 25th until October 10th. It was horrible. I even went to the emergency room because I was so weak and almost fainted. Got all my testing done and they said I was healthy and it was a fluke. Ok. I took that answer.  Then within a few days my period stopped. That was the last time I had it. But on 11/20/16 until 11/23/16 I had very very light pink spotting. I thought it was my period starting again but it only lasted those 3 days. I had one discharge that made me think I was getting my period but that stopped as well.  Light cramping, I was very irritable and tired (I'm still extremely tired. Not trying to overthink it because I've been working a lot lately as well). I'm wondering if I should take a test or would it be too soon? Or could it possibly be that my last period was too much and my body didn't have enough lining for this round? Any ideas would be appreciated. Thanks guys!!