Feeling icky

My pregnancy test was positive last Thursday and I am 5 weeks and 2 days along. I woke up this morning with light spotting and have now been bleeding a little every time I pee. I was constipated but now can't stop going! 😳 Am experiencing slight cramping and am starting to freak out. It feels a little bit like when I get my period. So uncomfortable and confusing. I emailed the midwife I plan on using, but haven't yet been to the doctor.