is it possible?

Like I said in my last post,
i had unprotected sex after not having my period for
two months,
and I haven’t gotten it this month.

I’ve been having headaches everyday,
and I recently started to feel
really bloated and my body feels achy,
also my breats have been tender.

Could this mean I’m pregnant, or
what else could be the cause for these things?

I haven’t had any changes in my diet,
and I am not significantly stressed out.
I am going on about my days just as I always have.