Excited for her but hating her...

So my sister just found of her and her boyfriend are having a baby. Me and my husband have been trying for a while and I can't seem to get pregnant. I'm excited for her but a part of me has jealousy and hate towards her, I know I shouldn't feel this way but I can't help it. We are married and have a stable life and are in the right place to have another one and it is like a HUGE slap in the face to me because she JUST met this guy like a couple of months ago😣 😭😭 I need some sparkle and baby dust in my life right now. And today is my birthday and she's telling me today of all days knowing how hard we've been trying....