Oh OP it’s a tough spot to be in and the “Shall I? Shan’t I?” is enough to drive a person bonkers.
I can only offer my own experiences. When I got pregnant the first time I was 22, in what I thought was a solid good relationship with a man I thought I could spend the rest of my life with. From the moment the pregnancy test said positive I ran cold, I knew that I really did not want to have a baby then, the man I was with didn’t either and pushed me down the road to abortion.
I know I made the right decision because the relationship went from bad to worse. But honestly there were times I cried over my choice and I even had some pretty nasty nightmares afterwards. But that was probably due to the circumstances I was in as well as the fact I hadn’t allowed myself any real time to come to a full decision - I went with my gut reaction and because the Ex was 100% against having children, I went along with it.
When I got pregnant later in life with my now DH it was a complete surprise. I was always indifferent about having children, had moved past the grief of my abortion and was content in life.
Like you, I’m not fond of other children AT ALL. I’d also been told I was unlikely to conceive the conventional way (and that IVF wasn’t guaranteed to be successful should I choose to go that route) as I have extensive damage to my uterus from long term undiagnosed endometriosis (which led to the removal of my right ovary and Fallopian tube). So when the test said positive a few months after the above mentioned surgery I was in an absolute state! I’d just come to terms with not having children and thought I was okay with that.
Like you I had no idea what to do, it was almost like minute by minute I’d go from “I can do this and want to!” to “Fuck I can’t do this, I shouldn’t do this.”
One night (after telling DH who was over the moon which made my predicament even harder!) I sat in the living room of our tiny flat, put my hand on my stomach and tried talking to the baby, at first I felt a prize twat for talking to my abdomen but after a minute or two I was having a very clear feeling - I wanted the baby. I’m not saying this works for everyone of course and even after that I still had very large periods of time where I was second guessing my decision - but I went ahead.
I was terrified of the sort of mother I’d be, my own mum was absent (at best) or drunk and abusive (at worst) and I’d not had the happiest upbringing... was so scared (still am a bit) that I’d completely screw it up!
Then I got to my first scan, where DH and I found out we were expecting Twins! 
That threw my confidence in my decision into complete disarray for a while but as they grew and moved I felt more at peace with my decision. The twins arrived in October 2017 and I didn’t feel the immediate whoosh of love. But like a PP said - one day I realised just how in love with them I am!
I go to the toilet by myself (unless one of my cats decides to sneak in before I close the door). I spent the first year climbing the walls a bit because I felt I was trapped, but then I realised I was trapping myself IYSWIM- they turned two a few days ago and I honestly can’t imagine life without them now - if I tried I would probably cry.
I don’t go to any play groups with them at the moment and tend to avoid soft play when it’s busy. I still prefer to keep other kids at arms length when they’re this young (for my own sanity!) but really, life with a child (or in my case two) in tow is different and a it’s a bit more of a ball ache in the first few years to get out and about, but it’s what you make it.
That is my experience. Just that.
You must decide what is best for you @IonnaS and either way, I wish you luck 