Does this seem on track with a period?

So I’m 7 DPO and my uterus area feels heavy and mildly crampy. I’m definitely not due for my period yet but we’ve been trying the last 3 months to get pregnant. Is this a normal period symptom a couple weeks before getting it or do y’all think this could be an early sign of pregnancy\implantation? It just seems early for period symptoms. Anyone else get this around the same time and ended up pregnant?