I'm a 19 year old female with a slightly irregular cycle. I'll try to make this timeline concise as possible. 

May 6th, around 1 AM- Period starts. 

May 13th, Period ends.

May 19th, around 1 AM- Unprotected intercourse, pull-out method implemented but I was nervous about having it been slightly faulty. 

On May 23rd, around 4 PM- I took ELLA RX, which is a hormonal birth control pill that is supposed to work until the 120th hour. 

I had cramps and intense mood swings for a week after taking Ella. I also have been taking vitamin C supplements as per recommendation of my aunt, who is the first person I told about my nervousness.

The cramps subsided until a few days ago- The 30th. They've felt mild but consistent.

Today, June 2nd, which is about three days before where I'm expecting my period to be, I'm having a little bit of spotting and brown and red (clearly bloody) discharge. I'm also having pretty severe and consistent cramping, and indigestion- but i also have an extremely sensitive stomach, and i usually get "stomach churning" right before my period. 

I am having no fatigue, no nausea, and no breast tenderness. No cravings or food aversions. 

My worry is- am I pregnant?! I am finding mixed answers about when "implantation spotting" is meant to occur, but I didn't see or have ANY of that a week after my ovulation. 

Any info would be a huge help. Thank you so much.