Is the prayer of the girl who became pregnant by me and whom I abandoned the cause of my current problems?

Sins and transgressions are a cause for calamities and deprivation of sustenance, as stated in the Quran and Sunnah. The hardship a servant experiences may be due to their sins, and repentance and abundant acts of obedience are a cause for the improvement of one's condition and the removal of distress. Among the requirements of repentance is to sever ties with the woman unless you are certain of the sincerity of her repentance, in which case marriage to her is permissible.