Yes. I think it is. I live in Italy, DS's baby/toddler years were the loneliest of my life.
I was "doing it wrong signora" by local standards, so my confidence was in my boot,
I think people avoided me because ... well I was hard work. I was very down, my cultural cues were different. I didn't get the jokes. Nobody understood mine. My Italian was fine, but stress and tiredness blunted my ability to communicate well. And they were knackered too, so had no extra energy to spend on the extra concentration needed to follow my train of thought.
Our foreignness may be causing distance, but that doesn't mean it's a rejection of foreign mums per se.
I promise you it can and does get better. I've always been on a different page to most people here about things like bedtimes, no 1st communion, , no believing in colpa d'aria, education... stuff like that. But once I got over the tiny child hump, I found to easier to rub along with people, and they with me. No matter how very different the details of our parenting can be. Or how eclectic my prepositions can get when I'm over excited 
DS is 16 now, but I do remember the out of step, lonely and misunderstood days when he was very small very well.
So