Irregular period very light the color was mostly brown lasted for 4-5 days and just a little blood. And just recently there was a little gooey pink discharge. I feel tired more and need to use the washroom more. My smell is sensitive I've gained weight.. My last regular period was on March 23 when It started

It is certainly possible. Irregular periods make it a bit more difficult since you can't use a lack of a period as an early indication. Try a pregnancy test. Be sure to follow the directions carefully.