[Harmony♥]

If you can't afford a name brand test, you could always buy one of the non-name brand ones from the dollar store. Scrounge around for some loose change, and buy one. Especially if you don't want your mom to see, HPT's are easily disposed of. Dollar store bought tests also work just as effectively and accurately as name brand ones. You just need to keep an eye out for expiration dates. Obviously, taking a test would be the only way to know for sure. The symptoms alone you mentioned could be symptoms of anything...even the common cold/flu. Taking an HPT sooner, rather than later, will help put your mind at ease and give you the answers you're so desperately seeking.

As far as birth control, it won't harm the baby. Many woman don't even know they're pregnant (while using birth control) right away and continue to take their birth control regularly, and their child comes out fine. Trust me, it's just an increase in hormones. It will do no harm.