Pregnant with rainbow baby and cramping

Teneale • Never ttc again but we're ready for baby #2 😊
Hey ladies, home on my own and my head might be overthinking things.
Mc in April at about 7/8 weeks am blessed and pregnant again doc said about 5/6 weeks and hcg levels are good and on track. Been having some  cramping in lower tummy tonightin the middle not really painful just uncomfortable no spotting or anything an really tired and constipated as all hell, plus peeing more than once every hour. Just need reassurance that the cramping is normal and it's just my uterus expanding and body changing. Thank you!!