Accidental heavy lifting while pregnant

So I’m 14 weeks and I haven’t got much of a bump right now and it might sound silly but in the moment I kind of forgot I was pregnant and was at work and I had to lift a 10kg gas bottle. My back is now killing me (I haven’t got cramps though) I have low blood pressure and I just feel not that great. I have been really careful with no heavy lifting during this pregnancy besides then. Could I have possibly harmed my baby? I have a drs appointment in a few hours but I just worry.