( ( At ( ( ( about ( five weeks ) ) or ) ( so ( after ( your ( last period ) ) ) ) ) ) ( , ( you ( ( see ( `` ( ( ( fetal pole ) '' ) ( on ultrasound ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN At) (UCP (NP (RB about) (CD five) (NNS weeks)) (CC or) (ADVP (RB so) (PP (IN after) (NP (PRP$ your) (JJ last) (NN period)))))) (, ,) (NP (PRP you)) (VP (VBP see) (NP (`` ``) (NP (JJ fetal) (NN pole)) ('' '') (PP (IN on) (NP (NN ultrasound))))) (. .)))
At about five weeks or so after your last period, you see &quot;fetal pole&quot; on ultrasound.
(ROOT (S (NP (DT The) (JJ fetal) (NN period)) (VP (VBZ lasts) (NP (NP (QP (RB approximately) (CD 30)) (NNS weeks)) (NP (NNS weeks)))) (. .)))