Hi..Im Having A Sex 4 To 5 Days Before My

Hi..Im having a sex 4 to 5 days before my estimate ovulation day..1 week later im having like menstrual type-cramp also my nipple is sensitive and having a back pain..some dizzy but no morning sickness..the cramp will hurt more if i wearing my tight jeans..my next  period will be 2 weeks from today..i didnt expect anything because it is too early to do some checking..but still curious to know if im pregnant? or should i need to wait till my due period?