Cramping?

So technically my period according to the app isn't due for almost two weeks. My husband and I started having sex after my last period just over a week ago. Today I have felt some minor painful cramping. I don't recall feeling anything like this the last time I was pregnant. Just wondering if it could be implantation cramping? I have passed some gas today but I had a bowel movement and felt a bit better but still the cramping so I don't know what's up. It's almost directly above my pubic bone.