Glad your pregnancy is going well!!
Hmmmmm . . . sorry you have the nasties. Sometimes that just happens. They like a really specific temperature . . . so much so that they will choose a certain spot on your head (usually the nape of the neck) to favor . . . that is why they are on you and not your hubby. I actually learned to "nit pick" at the elementary school for inspections before kids can return to school.
I know you said the health department said that they immune to oil . . . but mayonnaise is actually a very effective treatment. You spread it against your scalp and come it thru, leaving a generous amount and put on a shower cap or plastic bag. Leave it on for at least 2 hours, but overnight is best. This does not kill nits and needs to be repeated in 7 days even if you see no lice as the nits will have hatched. There is no down side to repeating this a third time. The mayonnaise suffocates them, so I don't know how they could be immune . . . I bet people aren't leaving it on long enough. Oil will work too, but is messier. Redrose . . . your hair will be beautiful!!!
Meanwhile (and on the same day) you need to change all of your bedding. Put your pillows in a hot dryer for a long cycle and if someone can vacuum your furniture it may be helpful. You already know to wash any hats (or put them in a hot dryer).
Lice do no actual harm so the pesticides are way more harmful than the lice for anyone. They are just a real nuisance to deal with and very contagious.
Checking for nits is really important. You are trusting someone else to do this for you and it takes a long time to do it right. The hair must be parted each 1/16th- 1/32nd of an inch (or less for thick hair) so that EACH hair root can be inspected. Actually look at a ruler to see how small that is. You are only looking at one row of hair roots at a time. Have strong light right near the head. The nits are usually glued just a bit from the root and need to be pulled along the entire length of the hair strand to get them off. Then they should be deposited in a small bowl of water which contains a couple drops of dish soap. Your head should be checked again in a few days. Unless someone sees this done, it is hard to imagine the tiny parts that are made to check the whole head. So find a very patient person to do this for you.
I'm so sorry you have to deal with this during your special time. I know it is a huge pain, but anyone can pick up lice from anywhere, so it shouldn't have the stigma that it does.
Be really aggressive with your treatment because just a couple nits can start the whole thing again.
Sending lots of hot tea and beautiful china cups for you and your nit picker!!
In His Grip
AlwaysRosie "We can't control the waves, but we can learn how to surf!!"
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