Ay, ito ay medical terminology na medyo specialized, honestly! From what I understand, when the doctor says "consider adenomyosis versus myometrial contraction," they're basically trying to figure out what's causing what they're seeing on your ultrasound, whether it's adenomyosis (a condition where the uterine lining grows into the muscle), or just normal uterine contractions (which can happen even in early pregnancy). At 4 weeks and 5 days, your uterus is still so tiny and doing a lot of changes, kaya sometimes it's hard for them to tell the difference sa ultrasound alone. I'd really suggest asking your OB to explain in simpler terms kung ano exactly ang nakita nila, and what the next steps are, kahit ako napag-usapan ko lang 'to with a few of my mum friends, best talaga na marinig directly from your doctor what they're planning to do about it.