Homophobic friends

I'm a girl uni student who has met a group of girls who I get on with really well. I've been really lonely at uni, with hardly any friends in first year because of corona, and now in second year I was so happy to meet people. We've been going out, getting on really well.

Thing is, they're all very-straight girls. I'm very feminine, but I've got a girlfriend. The other week we were talking about our relationships, and I mentioned my girlfriend. The reaction was like... shocked silence and awkward laughs. Since then, it's been a bit weird. I feel like they stay away from me a bit and aren't as touchy with me anymore. It just makes me sad because I was so happy to have finally made a group of friends, and now I don't know.