Email problems...

I'm having huge email trouble. I don't know if this is even the right forum but it's not programming or web design. I had all my emails going though gmail, I'm in the process of resetting everything up right now because I can't figure out what is the problem.

I'm not getting my email right and I have all my emails showing up nice and tidy in my sent folder, but no one is getting them. Not even directly from my gmail account. I went ahead and wiped my whole setup on my hosting and am redoing it, perhaps I screwed it up somewhere.

I'm getting everything out of gmail and setting up thunderbird. I'm going to quit sending attachments, that seems to be where the trouble started. I'll FTP everything from now on.

Could it be that I'm using a tethered t-mo connection though my Android?

I don't even understand how this is possible...am I just crazy? I have an anti-tech field around me lately. Dead computer, dead internet (they have swapped out equipment 3 times and sent 6 techs including 2 line techs and can't find the problem) and my phone is all sorts of messed up. My sim card keeps popping out yet somehow I still stay connected to the network, just not very solidly. Technically that shouldn't even be at all possible. Combine that with the brakes going out on my car, again, and my car catching on fire along with a small accident. The car stuff though...I think...is related to some divorce issues.