Only 4dpo using opk’s

Kyra • 🤰🏼#2 due Dec’22. 2 year old son and 8 year old foster son

Okay so I know it’s crazy but I’ve been super tired and have had nausea today, my boobs are sore and I feel a bit dizzy occasionally. I really didn’t have any symptoms with my first so no idea what any of this means, if anything. So I guess my question is has anyone else had symptoms this early and gone on to have a BFP?