I'm 22 years old, and yes I know that there is always a possibility of pregnacy. I had sex 10 days ago, and he came in me, I haven't felt any different or anything. But I always have bacteria infections, yeast, or UTI. I believe I have a yeast and UTI right now, I have a very low immune system, I usually stay sick. & when I don't get enough sleep my back aches and I have headaches and I tend to feel sick in my stomach. Is that normal? My period is due in 3 days and my stomach is cramping, I'm wondering if it's my yeast or UTI, I'm taking medicine for the yeast... Just answers for any of this? Does anybody think I'm pregnant? Any answers please!