Help?

Buckie

So this is baby #2 and over time I’ve developed this small belly and definitely not something that happened over night but according to the doctors and test I’m 3-4 weeks pregnant but look at this and I’m a very fit body, before I I was ttc I had a 6 pack and everything and then this...could I be carrying multiples?! And my belly is hard and not soft like bloating usually is