Hi I'm 18,I just had sex with my boyfriend on the first day in periods,is it possible for me to fall pregnant? I used a pregnancy Test Device after 6 days we had sex,just to check if Im pregnant or not and results were negative. But now the problem is that there is lot of change in my body,on that day after we had sex later I began to feel some pains,I'm always sleeping,im lazy,there is bad smell on vagina(1st week aftr we had sex) and eat alot. Please help