Help anyone

Lexi
My name is Lexi and I possibly think that I am pregnant .. My cycles are very irregular . I get my period every 3 to 4 months .. I had my last period on December 23 and it lasted about 5 days .. Immediately after my period ened I had sex unprotectedly Multiple times .. My period ened I believe either the 27th or 28th of December and the day after that I had sex and every day or every other day since my period ened ... On my chart it's says that I was most fertile the 1st , 2nd 3rd 4th of January I had sex on the 30th and then on the 1st and multiple times after that . Including today ? I've been trying to concieve ? Can I be pregnant ? Is there a chance ? Please someone I hope this time it's the charm .