anyone delaying or spacing out shots?

I'm completely pro vaccinations but after my babies last round of shots it seemed as thought she was sick for over a week. She stopped rolling, stopped babbling, it was so scary. She hasn't babbles since. She's supposed to get her 6 month shots tomorrow and I'm terrified she's going to regress even more. My two year old was just diagnosed with autism and I'm hyper vigalent with my daughter. How have you been handling shots? Am I crazy for wanting to space them out? Opinions please.