Crying at swimming

Sofia woke up at 7.20am today! I got her and made brekky. She had a bit and then some more fruits etc. Afterwards I had a shower whilst Mike with her and then we were off to swimming. Mike went in the water with her again. Sofia started crying and acting clingy again, and the teacher thought maybe it was me being there so I left. So heart breaking leaving her when she was crying for me… but it went better after I left and at the end of it she was having fun. I watched from outside… We went home and got changed before running a couple of errands. When we got back it was pretty late so I gave her lunch and put her to bed. She cried after a bit so I went back in, but all was good so I left her to try again and she found her sleep. It was about 12.30pm when she did. 
Sofia slept till almost 3pm! And so did Mike and I… When Sofia woke up she had a snack. Mike worked whilst we played and read books. Afterwards we went grocery shopping. When we got back I got dinner ready (left overs). Sofia didn’t eat that much, but she’d had a pretty decent snack when she got up and lots of snacks shopping. Think I need to make meals clearer… Then it was time for bath and bed. Sofia went to bed with no issues.
Sofia puts up a fight every time she needs a nappy change (unless I change it where she’s standing at the time – standing up). She’s ok with it once I get her to the changing table if she can ‘read’ a cd cover etc. She is also the only one who can brush her teeth.