I thought I should post an update:

I had a CAT scan done last night (not a 3D dental one, just a traditional 64 slice one used in hospitals) and they didn't see sinus penetration. No evidence of sinusitis on that either which was good. That's the good news.

I saw the oral surgeon and he did another pan x-ray. He saw what he thought was an obvious abscess of the upper 1st molar (which was ROOT CANALED so I'll never have another one of those). I had it extracted this morning, and the oral surgeon said the roots did not extend into the sinus cavity and that he didn't see any obvious perforations of the sinus cavity itself. He cleaned it out very well, according to the dental assistant (She told my sister that - I was kind of out of it still) who confirmed two of the three roots were abscessed.

So no membrane, just stitches, perchlor antibiotic rinse, ibuprofen, T3 as needed and antibiotics: metronidazole, and Amoxicillin/Clavulanic Acid.

I am hoping all goes well. One thing that concerned me, is that my oral surgeon said if it was a bad infection even with an obvious sinus perforation, that he wouldn't put membrane in right away - I was surprised at that. That he would rather be satisfied that the infection dry up since most tears heal on their own through fibrous tissue formation? Wouldn't it be better to have an ENT and oral surgeon together in this case so both could do their part? confused here.

I am following all post surgical instructions and hoping for the best.