Hi, Welcome to Health care magic forum.
As you describe, the the period you had sex is not in the safe period, so there is possibility of the pregnancy
You can have pregnancy test, and if negative, you can have, H.C.G, test, and the transvaginal ultrasound
for excluding the pregnancy.
So i advise you to consult gynecologist for diagnosis and treatment.
Take more of green leafy vegetables,pulses,sprouts, and protein rich foods to have good health and resistance.
Wishing for a quick and complete recovery. Thank you.