Myself, partner, our son and my partner's son from previous marriage were due to spend Christmas with my sister, her daughter and her husband. On Monday, my sister sent a message saying Christmas was cancelled as my niece had tested positive for covid after doing lft test, they then sent off PCR tests for all of them which on on Tuesday came back negative for all including my niece. So they wanted to go ahead with Christmas. Then our side, my partner's son had tested negative after doing lft tests but had mentioned to his dad that he had felt a bit rough (sore throat, loss of smell and loss of taste) a few days before. I asked my partner to get him to do a PCR test which he did and came back positive on Monday, so meant he couldn't come to us for Christmas as he lives with his mum. Now today my partner says his son wants to do another PCR test and if negative, he can come for Christmas.
To be honest, I feel like telling everyone to stay where they are and meet up for new year celebrations due to the positive results. Would I be unreasonable? Am pregnant and feel we should be more cautious as there have been positive results. Which test is more accurate, PCR or LFT?