Cramping more than 2 weeks before period

We are not trying and we are not necessarily trying to prevent if u know what I mean. I just went off birth control pills I'm july so I'm certain my body is still adjusting. But does anyone get almost excruciating, short lived sharp pains in lower tummy when they are not pms'ing? I started getting them a couple days ago at 16 days pre period. Thoughts anyone.....I'm new to Glow