Advice needed...

Should I feel bad that my husband is txt his ex wife and asking her WYD?they have daughter and that’s never been an issue cuz I also have kids from a previous relationship but I don’t txt my ex and randomly ask him what he’s doing?😐yet he complains about my ex a whole lot when my ex doesn’t even call or txt me unless it has to do with our kids but that’s about it he respects my marriage I need some advice if I’m over reacting to feel bad and I’m being a sensivitve ass female which I’m due any day I have no female friends to talk to about these things..Thanks in advanced.