Pregnancy question/ concern

So I found out I am pregnant when I found out my HCG was at 800. Then two days later I had a follow up blood test and my HCG was at 3,000.

The levels are doubling nicely they said for 5 weeks pregnant.

However in my pelvic area I have light very faint barely noticeable cramping. And some stings in my stomach.

Is this normal? Also my stomach feels like it twitches and has nervousness is this normal.

Also diarrhea and nausea

Symptoms

1. Diarrhea with nausea

2. Light barely there cramps and pinching

3. Nerviuse wish washy feeling in stomach