Am I pregnant?

Princess

So 9 days after my period I started having A migraine ive this migraine for nearly 4 days and nausea I’m also having light brown mucus any idea what this could this be I also feel really tired

I’m now on day 22 of my cycle my cycles are very short I’m now craving pickles and drinking jars of pickled juice Anyone help what could this be surely I can’t be pregnant although I have been sexually active without contraception