My boyfriend ejacuated and after tht went for a bath . We washed himself properly with soap. But later wiped his body with a towel and after 20 mins i used the same towel to masturbate. The towel cant get dry so quickly. Im scared. Can this cause pregnanc

My boyfriend ejacuated. And after tht he went for a bath. He washed out everything prop but he had erection throughout his bath. And he wiped off his body with a towel. And after 20 mins i used the same towel to masturbate. I kept it right on my vagina. I dont think the towel would have dried so early.im scared. Can it cause pregnancy?