help!

a little long, but thank you for taking the time to read and reply!
alright ladies, here's a little background on me:
healthy baby girl 9/2004
unexplained micarriage 8/2010
healthy baby girl 7/2011
*surprise* healthy baby boy 8/2012

now, due to IGT (insufficient glandular tissue) i am unable to ebf. i WAS breastfeeding on demand and then supplementing to ensure my LO was happy/satiated.
2 weeks ago, he started refusing to be near me. if his head so much as brushes my breast, he loses his mind. i worked and am *still* working with 3 different LC's. all of them are stumped and have one question: are you pregnant?
he will actually cringe at my breast, snarl, growl, and spit it back out. keep in mind, i dont do dairy. i have made NO changes to my diet. i eat extremely bland food and i have not changed soaps nor detergents, nor lotion. i cant even use my SNS with him!
my first PP period came on sept 14th and didnt end until september 30th (i KNOW. ugh) since i was so sore and frankly, not in the mood, we didnt *do* anything until mid october. TMI WARNING:
we messed around a lot but then used a condom..before the umm.. fireworks display. there was penetration before the condom however.
problem is, i havent had a period yet...and with my baby refusing my breast milk (coupled by the fact that i feel completely empty ALL the time now)...i'm slightly scared that i could in fact be pregnant.
i took a test around the beginning of november but it was negative. i'm not going to test again until thursday (we go to town for shopping/needs on that day) so i can buy a test..and i guess i'd wait until friday morning's first pee to test.
what do you ladies think??
is this some funky PP thing i'm going through?? in the past, i was pretty par for the course when it came to my periods.
has anyone else gone through a similar experience? i'm slightly freaking out here!

My hormones and regular periods got DESTROYED with my first child. I would go a year and only bleed 3 times. It was kind of insane, though I didn't mind since I was not trying to conceive then. So it is possible for it to change drastically after a pregnancy.

any more prominent pg signs?? I myself couldn't wait that long to take a test...especially if I was freakin out. I would have to do one asap to find out an calm my nerves somewhat...hoping the best for u!!

thanks for the fast reply ladies!
i dont feel out of whack hormonally- that's not to say i'm not, but i have tended to bounce back fast to normal routines in my body after pregnancies.
as far as symptoms, it seems like my sense of smell has woken up this past week. things smell stronger. i'm light headed a lot...and maybe a little nauseated, but nothing to blink an eye at.
i had NO symptoms with my last pregnancy. i took a test as a joke and it came back pregnant and wow, was i shocked!
we're basicaly on a cut and dry budget, almost every cent is accounted for each week- to prevent any frivolous spending, etc... so i *have* to wait until thursday to get the test. and believe me, it's killing me!

I use the dollar store tests..they are not completely accurate but if your pregnant it will show an they are only a $1...I would buy like 5 and keep em on hand...if u don't normally exhibit symptoms idk..do YOU think u are??

i'm picky, i wont use any tests unless it's a digital--then there's NO chance of me misreading it, which i'm prone to do- hopefully i'll post results friday morning