Week 2 should I wait?

Started last Saturday midday. I’ve been tracking calories (mainly to get a sense of intake and protein). Down 4 lbs. Second shot of 2.5 should be today but I had chipotle for lunch and pizza for dinner, total day not exceeding 2k cals. Should I do my shot tonight or wait till tomorrow? Worried about side effects since I was super nauseous last week and burping days 1-3. Please advise!