HELP !! Early pregnancy symptoms

So we've been TTC this will be our second month. Well we've had sex before ovulation & after , also during my fertility window. Well I ovulated 10days ago & for the past week I've been getting TERRIBLE headaches & I've been way more irrtitable than what I usually am. Aunt flow is expected to come the end of this coming week. But my question is I NEVER GET HEADACHES..& these are EXTREMELY painful. & I get them EVERY SINGLE DAY. So I'm wondering if anyone else has experienced this & if if could be an early sign of pregnancy? I also have stage 1 endrometrosis , so I'm constantly in pain cramping & sex is very painful. ( when you get pregnant those symptoms basically disapeer..& well I havent had any of my normal symptoms for like 4days now. I've also been extremely nauseous the pass week or so ..I'm not getting my hopes up just would like some input if anyone else has gone thru this & what was the outcome? Thanks!😁