Am I being too worried ?

I’m am 5 weeks & 3days I found out at home I was pregnant then went into the er to confirm the test . I ended up really sick a few days later n had pains in my lower back n stomach went back to the Er they took blood work n urine & did a sonogram it was to early to see the actual baby but they were able to see the sack & told me everything was fine . Same time I went to my own private doctor to confirm & get my prenatal vitamins doctor told me I was high risk being that I was early in my pregnancy so she wanted me back every week I’m suppose to go 10/24 for a sonogram to make sure the baby is growing properly & My HGC is higher . I been very anxious & nervous I’m always peeing n very hungry at night it’s hard for me to sleep properly I’m always cold n sweating which makes no sense. AM I BEING TO WORRIED OR IS THIS NORMAL AT 5 WEEKS & 3 Days??