7 weeks and brown thin watery discharge, worried 1st time mom

Hi Moms, Im 7 weeks 4 days 1st time mom and had a day of brown watery discharge. Supposedly to have a gynae appt this week. However due to the brown discharge and slight sharp pain, i went to KKH A&E and they did scan. Doct mentioned mine is an “uncertain pregnancy” as they were not able to really see the baby altho there is a pregnancy sact and “egg”. Doct also mentioned there was some kind of “blockage” in the the scan image which she cant explain. The doct seemed young and her name wasn’t in the KK gynae list. She advised to return 2 weeks later or reschedule my gynae appt a week later. My gynae which i had made appt with is at Parkway East. Im worried, 1) should i seek 2nd opinion or wait? 2) should i continue my check up in Kk or go Parkway directly?