What is going on?

So I came on my period 10dpo. Ovulation was confirmed threw charting. Anyway my periods usually last 3 days. This period was for 2 days but I would still class it as a period it wasn't implantation. 2 days ago is when I stopped bleeding but my boobs are really sore and they are noticeably larger I'd say a cup size larger I'm busting out my bras! Now today I am having what I would describe as ovulation cramps they feel the same. I don't know what is happening this month has anyone else experienced this? It's quit unusual for my boobs to still be sore after my period and I'm also confused as to why I am cramping after my period finished.