Implantation?

I had sex on the 18 and ovulated on the 19th. I hadn't noticed anything urination alot, and a bit of nausea eating eggs yesterday and drinking from a water fountain(weird i know) well this morning I had some spotting it was like pinkish red, and cramping actually it didn't even feel like cramps, it felt similar but different in a way, but i felt them in my lower on the left side stomach and on my left side and back. Also my period is due in three days, and the bleeding hasn't gotten heavier and the cramping sometimes spikes depending on my position but that's it...any help? And usually my period comes on heavy and stays on heavy for the first 3 days its like I'm sweating or peeing. Tmi sorry 😅 and the cramping comes like 4 days before the period. Has someone had something similar?