Gender Discrimination

Hi I have been dismissed from my job in a very erratic and abrupt way. still without a valid reason supported with evidence. I had worked for my ex employer for 16 months so under the 2 year threshold. I had never received any verbal or written notices in any of that time and had never been invited to any meetings to discuss any issues the managers may have had with me. They were trying to relocate my job from working from home (that was what the job was when I took it) to working from the office. This brought on my anxiety (I also suffer with depression) and I started to panic, 1) about going back out to working with other people and 2) I was worried it would have a negative financial impact on me so I asked for a meeting to discuss. I currently have a 3 year old in nursery (I am his sole carer as his father is not around) so moving to the office would also mean I would have further to go should anything happen to him (another trigger for my anxiety, his safety) I thought if I had a meeting with the managers we could maybe come to an agreement that would keep everyone happy but instead a manager turned up on my doorstep (unannounced) the day after I had requested a meeting and gave me notice without any reason. When I asked for a reason there wasn't one and when I said that the whole office move had triggered off my anxiety and that I was worrying about it he just said "this is for the best then". Another reason for not wanting to move to the office which also made me feel extremely anxious is that one of the managers who is based there has reduced me to tears, threatened my job more than once, made me feel inadequate and scared me to a point that I felt sick and anxious most times when I had to approach him for work reasons (even now he has been emailing to resolve pay and I feel anxious every time I see an email from him, my heart actually beats faster) Under the 2 year employment law they don't have to give me any warnings or written notice or any reason right? but what if 3 other employee's (all men) who have worked for them for a less amount of time than me have been treated fairly and proper procedures have been followed to deal with their issues and they all still have their job. Can I claim unfair dismissal on disability and sex discrimination and possibly bullying/victimisation? There is so much more to this story and I have full supporting evidence but these are the main reasons I want to take this further.