Could i be pregnant i need to know if i

Patient: My periods are regular i have never had sex but i havent had a period in 4 months and i fell and hit my lower back on the steps and i was told nothing was wrong but it hasnt stoped hurting and it can be a sign of being pregnant so do u think i could be pregnant

Symptoms: Some of my faveriot food made me sick like pizza and raw meat made me sick in march