What could be wrong with me other then being pregnant?

Starting on thursday of last week, i started sensation nauseous, threw up a couple of time, by after twelve noon it went away. Dismissed it as something i must hold eaten. Then i be up last hours of darkness with the ill feeling again, threw up once again. Feels similar to there is someone contained by there jump up and down in my stomach..lol. I took a preg try-out, came out refusal, period should enjoy been here by the 9th. So I might be pregnant unwell do a redo check here eventually. That or Im not...duh..lol.but this nauseous hunch is terrible, and in a minute its accompanied by backpain, feel like someone have a cork screw in my support. I am on meds, I take cymbalta, toprol, and i also appropriate claratin d, my vitamins, and allergy md. I dont think its my meds, since i have been taking them beforehand this started. Urgh, it sooo fustrating feeling close to crap. Any of you out there hold any other ideas of what is going on? Or a means of access for me to be able to sleep, I enjoy a hubby that works O/N's and a 1 1/2yr old.
Answers:

Anyone know give or take a few post void residual (PVR) next to ultrasounds?

Sometimes pain if it get bad ample can cause one to bring nausea, but in this crust it sounds like it could be related to something resembling your period coming.

I would recommend getting in touch beside your dr to have this evaluated to see what could be going on. They can minister to you try to figure out what the problem could be.