Swearing god

Q: Back when I didn't know much about Islam, I used to occasionally say swear words like 'oh my ******* God'. I, by no means intended to insult Allah, and was mostly unaware of what I was saying, it would just come out of my mouth automatically. Did this take me out of the fold of Islam? If so, do my prayers between then and me coming back to Islam not count. I am very regretful for every saying it and would never repeat such stuff intentionally now.

Hopping from one Mazhab to another

Q: I normally follow the hanafi madhab however I wish to follow the shafii madhab with regards to wudu as i read that the shafii madhab does not consider wudu broken if blood or pus or other liquids flow from anywhere but the front and back passage. I am in a difficult situation due to blood/liquid flow and would like to follow the shafii ruling. Is this permissible? Also if I follow the shafii madhab with regards to wudu, must I follow it with regards to prayer and ghusl as well? If so, what are the obligations of prayer according to the shafii madhab?

Feeling ashamed of one's past

Q: I am really worried about something which I did 1-2 year ago. I was 16 years old and sexted with a married woman. She sent me a photo of her breasts twice. I felt so guilty and sick of myself and cut all contact with her. I am ashamed of what I did. My imaan wasn't that strong back then. I am a born muslim and I just remembred about it today. I think first time was one night in the holy month of Ramazan and second time later. What should I do? Will Allah Ta'ala forgive me for my shamefull sin?