Yeah - give birth. Seriously, you could wait a few weeks or months and see if you get some obvious symptoms like a larger belly, movement, or lactating, but you're not doing yourself or the baby any favours. Pre-natal health starts early and if you're waiting for the definitive signs that you're pregnant instead of taking a simple pregnancy test, then you're acting very irresponsibly. You could jeopardize your baby and yourself.
There are some many different signs and symptoms and there is also the possibility that you won't have any of them so if you are considering keeping the baby if you are than just suck it up and go to the doctor. Because that is the best way to go if you want a healthy baby. Besides there really is no way to be positive until you are to far along for it to make a difference if you are considering other options
There is no way to absolutely know if you are or not pregnant without either a pee test or a blood test done by a doctor. There are symptoms, but not every woman gets them when shes pregnant. Nausea, darker n!pples, sore bre@st, missing period, etc. She HAS to take a test to find out though...theres no other way.
Why don't you want to take a pregnancy test? If it's because you can't afford it, you better hope you're not pregnant. :) It's best to just get one and get it over with. So you know.