I am worried and scared for how I have acted

I think that I am putting my problem in the right category, because it encompasses, emotions, relationships, meeting someone and family. There are problems in my life, illness and family eorrry, and I was born.deprived of oxygen and this has affected me. I have had problems relating to memory, I cannot remember my way sbout, get confused, forget things, am slower in my reactions, mix up words, had special help with maths, I can't drive, was sacked from a restaurant job for forgetting to add a plate once with some tea and they felt I was a nice person, but slow. It does impact on everyday functions, I cannot cope with lots of pressure as in making snap.decisions, have to read instructions a,lot etc. I I am in my late 20s and at home. My mum is ill with a gentic condition and it is neurological, my dad hss health problems too. My sister has her own kids, job etc and does not comevoften. We do not go out much, my mum.csn't walk as well and her muscles are affected bybthe illness and her mind too, it is declining and dhe can't cook or look after herself. She is prone to falling over as well. My dad is older and gets tired and,sleeps every day. I live a,lonely life and felt found a chat site. It was one where you could chat all together or private message people. I chatted a few times then got chatting to this guy. We chatted privately on the site a few times then exchanged email addreses. It feels nice to have someone just to chat to. He seems like a nice guy, we have chatted a,lot for most days for a bit now. At first it was emails, then we chat via an app now. I have been honest with him that I had my problems at birth, never had a boyf and about my mum and helpi.g care fir her. It was just chat at first, family, things,we like to do, his job, my degree etc, but then we started flirting. I told him I havenever been with anyone no kissing even, we got talking in a sexual manner. He is a year older than me and also.lives,at home, he said he had a flat, but swapped with his younger brother and went back home to live. At first we only exchanged photos of our faces, he of some of where he works. It has become steamier though. I was NOT adked for any saucy pics by him ever. I spoke to him about sending one, he said if I only felt ok doing it. I am not stupid, I know it was a risk, I am talking to someone ibonly know via the net. He has told me which city he is in, I have only told him my general area wher I live. I have not given any numbers to him, but he gave me his mobile. I have NOT send any shockingly explicit photos. It was mt decision only, I liked chatting, I.guess I felt lonely, he never even expressed surprise after I told him my problems. It was just general chat for thevfirst few weeks. The pics,were only of my cleavage always with a top on. I told him it was only for him, but of course I have put blind in him. He has been, well we, have been sharingvquitevsexual messages now. I have never been with a man, he knows this too. I don't exactly feel guilty, but feel shaky over it. He sent me a couple of body part pics too. I feel so out if character though, I have never even had a date or kiss and I have sent cleavage shots a couple ofvtimes to a stranger. I knowvit sounds tarty, I think I felt lonely in life, wanted some just light fun and chat. I know it is a stupid risk niw and I told him no more saucy pics. He has sent a few sexual voice messages via email attachment. I have sent somebfantasy stories to.him. It is not an excuse, but itvhas conicided with my fertile days and I felt quite sexual. Have I been foolish? Should I.cut all contact? He seems realky nice, funny, I know where he works though would never go there. I know he has these pics ow in his possession. I don't feel guikty, but maybe a bitscared after sending them. I know itbis nit an excuse, but ibfelt alone, wanted some chat and never expected to do this. Please don't be judging, I am looking for genuine advise.