Ovaries sore to touch

Hey girls, I am about 12dpo and for the last few days have been experiencing pulling sensations in the right side of my pelvic area. Tonight I noticed my left ovary was a bit sore, and I brushed my hand over and it literally feels bruised? I’m really irregular with my period so I can’t tell you if I’m late or not but it’s the end of the month and 2 days ago I tested a BFN, and wiped and saw blood as shown in picture below (tmi apologies) that is all the blood that I had. Figured it was my period and went on with my day. Went to the washroom later on and no more blood and haven’t bled since? Any ideas on what this is? Has anyone else experienced this?