Hi mama, I understand your worry kasi first time mo yan! Honestly, thickened endometrium alone doesn't automatically mean pregnant, pwede itong mangyari dahil sa maraming reasons, kaya kailangan mo talaga ng follow-up with your OB para ma-confirm kung ano talaga ang cause, maybe a repeat ultrasound or blood tests. A few of my mum friends din nag-experience ng something similar and kailangan nila ng proper monitoring bago ma-confirm ang pregnancy, so don't panic muna and just schedule na agad ang next appointment mo para mapag-usapan ninyong maayos! Hang in there, sending you baby dust.