Cramping feels???

This is my 5th pregnancy (2 healthy babies 2 miscarriages). The miscarriages happened this year in early October and again in mid November. I am 5.5 weeks and am feeling cramps that feel itchy, stretchy but also mild pms cramps. I am not bleeding! I have been taking progesterone suppositories so I’m hoping that’s not masking anything. Both miscarriages were different. First hcg stopped doubling and the second one hcg looked great but miscarriage still happened and gestational sac dwindled. Can anyone help?!