I think I might be pregnant, but I’m not sure.

I’m about 3 weeks late, I think, but I could be wrong because I was on the contraceptive injection and when I came off it, my periods were all over the place so I’m really confused. Is it possible to be pregnant without getting any kind of morning sickness or sore breasts? I have other symptoms like I need to wee all the time and my breasts have definitely grown.

Can anyone make this any clearer for me? I’d be really grateful x