Just wait or take the preg-test

So AF suppose to be here the 29 of March but haven't see it ...took the preg test as glow required, test came out negative that was the 28....feeling like I will have AF soon but I usually don't feel this way... The feeling is different can't really explain...should I take the test or just wait few more days cuz I really want to be pregnant but I am scared to see another negative