Nausea to hunger?

Anyone go from feeling nauseous to then suddenly being really hungry? I (thankfully) haven't had severe morning sickness, just nausea in the morning and sometimes bad at night. But the past two days I haven't had much nausea, just hungry for EVERYTHING. Just had a scan on Thursday and was 7w 3d, the heartbeat was 148 and everything looked good. Should I be worried that I don't not feel good anymore? 😞