Am I being a symptom spotter? Too early?

Saima • 32 year old mommy to three great boys! Step son Vladi (9.19.09), Eddie (10.23.13) and newest addition Ozzie (7.31.15)!
12 dpo and ever since about 5dpo have felt off. Boobs full, nipple very sore, peeing a lot, moody, strange mild cramps/movement in low abdomen, even my SO out of nowhere last night asked me if I was pregnant. Symptoms all seemed to stop this morning but Tested today anyway and was BFN, am I just testing too early? AF due Thursday. My 1st was a compete suprise and didn't realize I was pregnant until I was 6 weeks. He'll be 1 next week and I'll be 32, really hoping I'm going to give him a playmate!