It could very well be enlarged then. The ultrasound tech told me that if you have your babies close together your uterus may not go down to "normal" size even with exclusive breastfeeding. I exclusively breastfed DD3 until 4 months (she was introduced to solids way before I wanted her to be thanks to her big sisters and grandmother.) But I still managed to nurse her until she was 13 months old. So I figured with all of that my uterus would've went back to normal size, but it didn't.
Of course, I have a 14 month old, 3 yo and 5 yo, so when would it have really had time to? I think by now I've probably tortured the poor thing.
I'm 11 weeks today, and I have been able to feel my uterus for a couple weeks now. I had my last baby in January of this year and he was a biggun. My uterus was measuring at 42 weeks when I was 35 weeks. (I had polyhydramnios). He was born at 36 weeks and weighed 9 pounds, so my uterus was probably pretty blown out and enlarged going into this pregnancy lol. But yeah since you have been pregnant recently, I can see why it's totally possible to feel like your uterus is big already!