4 weeks 4 days pregnant and no fatigue

Hi everyone, I am 4 weeks 4 days pregnant today and so far my only symptom is mildly sensitive nipples but no fatigue, nausea or crazy hunger. This is totally different from my pregnancy with my daughter where I felt utterly exhausted, my nipples were killing me and I started feel nauseas at 4 weeks (vomiting at 5). This is so different and new to me and I’m afraid it means my hcg levels aren’t rising and that it is not a viable pregnancy. Anyone been through a similar experience that went into have a healthy pregnancy?