Ovulation bleeding?

In July my cycle was 3 weeks late. My cycle lasted for 5 days and was a medium or normal flow. The day my cycle ended I had intercourse, and again 7 & 8 days after. About 5 days ago I had a very small clear discharge from my nipples. Today I had a very small amount of pink discharge and sore breasts. Everything I read says it is to early for implantation bleeding so could this be ovulation bleeding or since I was irregular could this be implantation bleeding? TTC over 40 is very stressful. What is going on with my darn body ?