Yellow discharge and slight bleeding after !?

Hi! I went to my gyno on the 21st which was the 11th day of my cycle. I saw the dr. because I had been having strange pressure and some pain in my pelvic area. It turned out that the ultrasound they did showed that I had an enlarged follicle in my ovary which the technician said would mean I am ovulating soon and is probably why I had the pain. My husband and I are ttc and this is the second month we are really concentrating hard. So, we had the next day (12th day of cycle) and then every other day since then. I monitor my bbt and I did have a rise on my 13th day which I think is strange that I would ovulate that early because I have about a 30-33 day cycle. I did an ovulation test starting on the 13th day of my cycle and for 7 days after because I did not realize til later that I may have ovulated earlier than I thought. All those ovulation tests came up negative. My husband and I still have had every day after that just in case. I did have cramping on the 16th day of my cycle and two times after since I have taken those tests I have had bleeding after (days 18 and 20) It's very light pink and doesn't last long. I also have had this light/milky discharge. It doesn't smell bad and I don't have any other signs of infection. I am still about a week or so away from when I should get my period. What do you all think? Could it be possible that I am pregant?