ovulation belly?!?!

Shayla
Right apparently I am ovulating and I know this sounds crazyyy😂 but me and my partner are TTC and for the last few weeks my body has changed a lot I went from a size 8 to a size 12 very quickly and my breasts are bigger I also get tired easy and I'm normally very am upbeat I get cravings for silly things as well this could just be me ovulating🤔 but I'm so confused as why my belly is changing so dramatically I have done a few home tests and have come back negative or some I'm unsure about... my mum also told me that when she was pregnant with me she didn't find out until she was 6 months pregnant... Someone please shed some light... Photo of my belly just now and a pregnancy test I did a few days ago... Please helpppp🙏💙