Frustrated! Cycle day 49

Abigail

My periods are irregular and I never know when/if I ovulate. Well 2 days ago I had some pink spotting when I whipped (only 2 times) along with cramping for 2 days. But never had any spotting or bleeding after that. Got a negative test today. Cycle day 49! I wanna hope it was implantation but I have no clue and it's driving me crazy 😩