I'm not surprised you feel all over the shop Luv!!
I wonder if there's a chance the sack has been reabsorbed into your body by now??
It's only a "maybe" about the ectopic, but you can always tell your FS you had an appointment with an immune specialist and he felt that there was a possibility it could be an ectopic on your left tube and you were to let him know.
It's really none of your FS's business if you want to go and get further testing/opinions done. He doesn't have to "approve" it and you don't have to justify it either. I'm not trying to sound harsh, just saying how it is Luv plus they're two very different specialities so there's no reason your FS should be offended etc IMO.
I think just put your thoughts on hold about everything that's happened today as best as you can..try to relax somehow..with a nice bath etc and try to distract yourself too as well as get the most restful sleep you can and decide how you're going to deal with it in the morning when you wake up