I need help please read :,(

Dorothy
I was due for af on tha 18th .. I ended up getting it on tha 19th .. Bleed only Til tha 20th .. And haven't seen it since ???? I'm so confused as to why I would only bleed 2 days ??? I took a test today it was negative .. I'm worried it's gona mess my ovulation days up ??? Has this happened to anyone b4 ?? Af is usually 5 days .. Not two ..