Can I insert the puck after a 7-day break if I'm not sure if I'm pregnant?

Hi, i have been using polaring for three months now. For the first two months, withdrawal bleeding occurred on different days of the seven-day break, but were abundant enough. Now during the break bleeding is very skape, does not get dirty even hygienic inserts. If I hadn't put my finger in the tilt I wouldn't even know I had them. The bleeding appeared sedentively during the break and is bright red. I did two tests with the highest sensitivity 12 days after intercourse and both came out negatively. Today, i.e. 27.04 after just 12 days of intercourse and on the 7th day of the break I should set up a new crayat, but due to such a small bleeding, almost imperceptible and invisible, I hesitate. Despite such a skapego bleeding, should I set up a new crab?or do one more ciazowy test?I would add that the crab was for three weeks all the time in the vagina, and the ratio was partly in a condom (the partner at first did not put on a condom, but also did not end in me). Please reply