HELP !!!!!!!! ASAP

Okay so I need help figuring something out like asap . I have been on the paragard for almost four months now and only the past few nights I've let my BF finish inside during sex and here the past few days I've been feeling really queasy and have had extreme loss of appetite. I'm scared I may be pregnant I need to know if anyone else has experience this during paragard and it turned out totally normal. I think he did a week or two ago also. So advice plzzzzzzz....