Getting a blood test tomorrow, nervous.

Hello everyone! So, I have been feeling weird for the last two weeks, if not more. I am on the pill and it has never failed me before for the past 6 years. But these past two weeks I have been feeling slight cramps once in a while and I am beyond tired. I used to eat anything at any time because I loooveeee food. Well since last week I’ve been feeling nauseous and have to force the food into my mouth on breaks because I feel I am going to vomit. Tested last week and was negative. I am getting a blood pregnancy test tomorrow to confirm. Any other ideas what it could be? Ps. My SO was feeling nausea too and that made me more nervous because of sympathy pregnancy. Thank you!