How can i protect my home against cold especially in my bedroom?

use window insulation kits from three M

Most home improvement stores have weather stripping that have an adhesive backing... find one that will seal off the edged of your windows to stop the air leaks.. You can also put up heavier drapes in the winter time... extend them out beyond the window edges at least 6 inches or more and use an adjustable rod bracket that lets the drapes hang right next to the wall. That will help stop drafts...

In the past we have built wood frames that fit inside the window frames (using 1x2 wood and clear plastic sheeting stapled on) the wood creates a space between and window and the plastic and weather stripping around the outside of the frame will seal out drafts. The clear plastic will let light thru even if the view is slightly blurry.

You may need to add more insulation and also use winterization kits to seal the windows completely. If you qualify, there may be programs to pay for these services. Start by calling your Power Company customer service. if they can't help try Social Services. The programs can benefit seniors, veterans, disabled, low income, sometimes anyone living in a county. The people who handle HEAP heating assistance may know where to direct you.

IF you cannot get help for this or you cannot afford it, just buy the window kits at the lowest find ($5- $10 each and reusable next year) just one at a time and do the bedrooms first. Insulation can be pumped into your walls through a hole the size of a silver dollar. Until you can afford that expense , bundles up, wear socks and sweatshirts to bed, throw on an extra blanket.

Get plastic to seal windows from inside at Lowe's or Home Depot

Yes get a kit and put some plastic up on those windows. In the meantime save some money and buy yourself some good triple pane windows to install this spring. Some places have weatherization programs. If you have a low income you could quailify. Just spoke with a lady a few days ago and in Oregon you have to be 200% under the poverty guideline. But they will install new windows, dooea, insulation and possibly even a new roof.

caulk has been my friend. my walls are not insulated at all. my basement is marginally heated. i did the windows first using a rope caulk...its in a box and you use it like a plastic clay to plug holes any where wood meets window glass. check for gaps around the window frame- caulk when found. and then shrink wrap.

also clean and caulk the base boards. start on the out side walls. if you have an attic access..foam weather stripping or caulk around that as well. outlets can let a lot of air in. get the foam gaskets...for under the outlet face plate and light switches.. and child safety plugs to finish sealing it off. when i did this the face plate would not come flush to the wall. rope caulk to the rescue.

check your air vents any gaps letting that nice warm air go into the walls?yup caulk. check your plumbing any gaps around pipes?