aching legs and cramps at 4 weeks 1 day?

St
My legs are aching so bad like they do before my period and I'm having cramps (not as intense as period cramps)- and little pains that feel like ovulation. Is this normal? It feels like my period is coming. I'm technically 14DPO, but had my positive blood test yesterday- 44 HCG
Thx for any help!