Thoughts..

Hello all, I have been trying to get pregnant. I  have an irregular cycle. My cycle is between 29-35 days. Average of 31 days. According to my period tracker I was suppose to ovulate July 24. I had sex that night. August 3 and 4th I have been experiencing cramping. I'm not sure if it's my period or if it may be implantation cramping. Should I just wait to see if it is my period?