4 dpo pinching pains

Lauren • Married since July 19, 2014 to my best friend. #1 my ❤ August 1, 2015. #2 due October 2019!
Hi! I'm 4 dpo and today I've noticed a sharp pinching pain between the right side of my lower abdomen and right ovary. It felt like someone pricked me with a freaking needle. Exactly like the pain from getting a shot. I'm hoping this is a good sign. I was pretty lax this month and didn't do OPKs. Next month I plan to start tempting instead. Opinions?