Hey ladies, I'm new here.

So, I'm having some major issues understand what I've done wrong this last cycle. Things have been very crazy around my house and I can't tell if I could be pregnant or not because It seems I've messed up my BC (Ortho Evra). Here is some information to (maybe) better help you:
My LMP was 8/24 - 8/28. I was due to put my patch back on 8/30, but forgot. It didn't go back on until 9/7. (<- This is where I'm SO confused.. you'd think I would have realized I didn't have it on for two weeks!) My DH and I had sex from 9/4 to 9/7, and more than likely some of the days between 8/28 and 9/4. I take my 3rd/final patch of THIS cycle (the one following my goof up) off 9/21; so my next period is due on 9/22 (latest being 9/23). I did some research and learned that I was fertile from 9/2 - 9/7, and probably O'd on 9/7.
The last week I've been experiencing mood swings and this weird headache/upset stomach thing in the evenings (only), I have also been really tearful/emotional. DH thinks I could be pregnant because of feeling ill in the evening because with my DS I puked every night until I was almost 25 weeks along, even though it didn't start until about week 9 or so. I also kinda have that feeling of being pregnant, or 'full'.
I guess my question once you get through the nitty-gritty is that, even though I've been pretty much faithful with my Patch, could I have gotten pregnant so quickly? With DS, even though I had stopped taking the Pill instead of forgotten it, it still took about 3 months for me to concieve and I was under the assumption (we ALL know how that ends..

) that since the Patch has significantly more Estrogen in it, it would be harder for me to concieve so quickly. What do you guys think?