Could Vomiting And Back Ache Be The Symptom Of Pregnancy?

hello doctor,

i had my period last month on 10th and i am expecting now....from last two three days i m having vomitin sensation,back ache ....so i thought my period would start but today is 10th and yet i dint get ma period start and my vergina part is dry...last week i had sex with my boyfriend...sex as such only rubbing the part and not the intercourse.....i am scared if i am pregnant....is it possible