Is this normal?

I started dating this guy, everything was great at the beginning. We don't live in the same city, but because of university most of the time we are in the same city. We are currently in vacations but we are still in the same city, the only different thing is that now his mother is here. I have been traveling to my home town, but he has stayed here, I understand we haven't been able to hangout, but anyways since he is here with his mother he has stopped giving me time. He can't call me or watch a movie with me because his mother, and now that I'm here we can't hangout because his mother "doesn't let him" but he doesn't even ask. We haven't been really together and his excuse is that he can't leave his mother alone, I understand but I'm just only asking to go out for 3 hours, which I don't think is much. Actually, like a month ago, was the last time we went out and his mother was super crazy (they had a big fight and she kept saying that we had to take her with us, at the end she didn't went with us but said she was going to leave the city - thing that never happened). I understand that she is his mother but I fell like she is more his girlfriend than me, am I being crazy? Their relationship is normal? Btw, we are both 20 yeas old