Strange Sounds--Please answer A.S.A.P

Question
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Followup To
Question -
I wrote to you about my pregnant guinea pig Sweetie Pie a couple of weeks ago. Well she's still pregnant but tonight after I cleaned out their cage and gave them food (they stay outside), Sweetie Pie made these strange noises and stood still. They sounded like "tchoo tchoo tchoo", a mix of toot toot and choo choo! It sounded like it might be breathing noises. But she did them for awhile and I went to touch her, cause I was really quite scared of why she was making this noise and she walked a foot away and made the noises again. She continued to kinda walk around a little and make them, but mosquitos and ants started to bite me so I left. I gave her other little boy away today to a good home, so now it's only Sweetie Pie and her baby girl Elly--who I'm keeping. Why do you think she was making these noises? Could it have been because a mosquito or something bit her? I'm a little worried.

Thank-You,

Arielle

Answer -
Hello again Arielle.  I'm not sure on the noises.  I've not got much experience with guinea pigs housed outside (most people keep them inside or in a garage/barn type thing).  Was it like sneezing or did it seem like she was in pain?  
A pregnant sow will make noises when she delivers, but its more of a squeal from pushing the babies out.
Anngela


Well actually she sounded kind of like a whistle while breathing. I'm going to check up on her right now.

--Arielle

Answer
If she was/is doing it with every breath then it sounds like she is having a little difficulty breathing.  Is it too hot outside for her?  Put a frozen bottle of water in the cage for her to lean on if she gets hot.  It could also be a sign of pneumonia.  Guinea pigs are very susceptible to upper respiratory infections as well.
Anngela