What is the ruling regarding my prayer, given that I remembered during it the possibility of ritual impurity (madhy) on my body without certainty, and what is the ruling regarding semen found on the bedding after intercourse, and is it considered pure or not if there is a possibility of it being mixed with madhy?

We advise you to turn away from obsessive thoughts and not pay attention to them. Do not rule a bed impure merely based on doubt, for its original state is purity. Semen is pure according to the preponderant opinion. Dry impurity does not transfer. Do not rule anything impure except with certainty. If the bed becomes impure, it is purified by pouring water over the place of impurity until it covers it.