im so confused

Hi guys. i want your positive opinion regarding this matter okay because it is so new to me. me and my boyfriend had sex last DEC 7 which is the day before my ovulation. then after a week of doing that nakaramdam ako ng symptoms like back pain, frequent urination then madalas ako laging gutom kahit kakakain ko lang po WALA pang ilang minuto gutom na ako. then mood swings sobrang sungit ko lagi sometimes napakaiyakin ko then. while I experiencing those symptoms na delay ako ng 5 days kase expected date na magkakaron ako is 22 and it is so unusual to me kase never nadelay ang mens ko kase regular po ako. then nung nagkaron po ako nung 26 ng umaga nung gabi po bigla ako nilagnat kahit di ako nauulanan. nilagnat po ako for three days at sobrang lakas ng mens ko pero di po ako ganun dati and I always have my period 7-10 days but this time po just 5 days lang. then nung natapos na period ko I still have those symptoms na nabanggit ko and im So confused po I don't know if I am pregnant or not kase po naguguluhan na ako baka kase yung last mens ko is yung tinatawag nilang pamawas. huhu guys enlighten me please. sana mapansin nyo post ko. thank you po