Yes they could be pg symptoms but they could be numerous other things as well. Sometimes when you are ttc you will see all sorts of "symptoms" as being pg when they are completely unrelated - just because you want to be pg. I've had this happen numerous times over my history of ttc. Try not to think of yourself as pg unless you actually go overdue for your AF and then if you do go out and get yourself a HPT.

I cut out coffee a few months ago in an effort to conceive so I'd say you should cut it out now. As for the wine, one or two would be safe until you find out that you are pg.

I hope your ttc journey is a short one.