My daughter is 3 1/2 mo old now, and for the 1st 2 1/2 mo of her life she screamed her little lungs out anytime i went anywhere!
It was so bad, i avoided going anywhere that took longer than 5-10 minutes to get there. I tried everything...making sure the straps were'nt too tight, strap covers, mobiles/hanging toys...nothing worked. I was pulling my hair out! I could'nt leave her home with dad either, because she is in a phase where she wants only mom, she cries and cries when dad has her, holds her and even talks to her!
(Finicky little booger! I think it's b/c i nurse her..) At any rate, i discovered that if i put her blanket over her infant seat, she calms down. It's sort of like her own little fort. Plus, i think she likes looking at the pattern on it, especially when the sunshine filters through. She's getting better with time...it's not as bad now as it first was. But, i still cannot keep her in her carrier when i go to the store...she has a fit! I have to get out my Snugli, strap it on, and carry her on my chest. It's a pain in the butt, but it's the only way i can shop in peace! She's a spoiled little thing. It's so funny, because she is my 4th and final child, and she is the most demanding, independant and finicky of them all too! My husband has said that if our 1st child was as ornery as her, we probably would'nt have had others! ;) (He's just jealous b/c she's such a mommas girl! LOL!) Good luck to you, i KNOW how frustrating it is!