Aaay mamsh, sobrang mahirap talaga especially na 6 months ka na at may complications pa, pero please check with your OB or go to urgent care asap kung tumatagal pa yan, lalo na with the pressure sa puson mo, kasi a month na ng ubo at nag-vomit ka na.
I get na nasa probinsya ka at walang available ang OBs mo, pero important talaga na may licensed doctor ang mag-confirm ng any remedies or meds sa condition mo, even if trusted yung nurse, doctors lang talaga ang makaka-judge ng safe sa placenta situation mo. A few of my mum friends in similar situations went to the nearest hospital para sa quick consult, at hindi na sila nag-risk.
For now, I'd honestly stick lang sa what your main OB approved (bedrest, vitamins, water) until makausap mo siya or makakuha ng proper check-up with your 2nd OB. Steam, warm fluids, and rest alam mo na effective sometimes, pero para sa oregano or any supplements, walang harm na magsolo check-up muna.
You're doing so well managing everything while you rest, mamsh. Alagaan mo lang ang sarili mo para safe ang baby!