Are they feeling any better yet? Being off food and not getting up much may be nothing much, eg. coming into season, but may very well indicate disease.
I'd advise getting the vet asap if you can't take their temperatures to get a hint of where to start diagnosing the problem. However, I'd also advise trying to find some way of getting them in a small substantially walled area so the vet can at least examine them and take their temperatures safely as I note you were worried about being bitten.
At this time of year with lots of mild wet weather, erysipelas can be rife, or it may be as simple as needing worming. But without checking them out, you may miss a potentially treatable infection until it is too late.
Worry about breeding them once they are well again as they will most likely not conceive if ill.