So I'm 5 weeks and I had a vaginal ultrasound today, everything looked okay, but they couldn't see much except that I'm pregnant and it's in the uterus. But now I've been having cramping and back pain

no bleeding though. I also feel like I've got cold like symptoms and maybe a low fever. But the cramping is freaking me out.. I've been pretty constipated, like only gone number 2 like once (today) in the last week. Ugh! Any words of wisdom?
Also had a miscarriage last October..
Re: Worried..help!
I also wanted to mention when you're pregnant, your temperatures are higher than normal due to the elevated progesterone levels and increased metabolism. If you do have temps over 100 then you may want to contact your doctor. The cramping could be round ligament pain. Good luck at the doctor today, hope all is well.
It's a boy! Grow baby, grow! EDD: 4/22/2016