Hey OP. I'm 40 and have never had any form of skincare routine either. Recently I started thinking my face looks really old and I have stepped a tentative foot into the world of beauty. If I'm honest I used to think it was only for vanity, shoving all those products on the face but after reading up about the ingredients I have realised there are some excellent reasons to adopt a new routine.
My basic routine now takes me only about ten minutes morning and night and I've really been enjoying how it makes me feel. I can't tell you if it is working yet because it's only been about 6 weeks but I do believe my skin feels more hydrated and less dry patchy skin.
My basic routine is now
Cleanse with oil based cleanser (literally rub it over face with clean fingers then clean off with soft flannel in warm water. If wearing makeup it is recommended to do it twice but I rarely wear makeup so not an issue for me.
Toner (mine is a light aloe Vera based spray with Hyaluronic Acid which feels lovely and dries on the skin quickly)
Then I add a serum - I have a vitamin C based one which is good for evening out skin tone, calming redness etc; a serum for blemishes which I use around hormonal times and my teenager is having great success with; a facial peel with AHA - this is one I only use at night. It contains enzymes which are supposed to clear blocked pore and dead skin leaving a brighter complexion. As I'm new to it I only use it 2-3 times a week
I only use one serum at a time. I recently added hyaluronic acid for the ordinary however after much reading I'm not going to use that often as too much of it is thought to cause dehydration of the skin as it is a product which pulls water from anywhere. I thought it pulled it from the atmosphere but overload causes it to pull water from your skin so I am taking that one carefully.
After serum I add a lovely moisturiser which I mix with 2 or 3 drops of a facial oil. I have a vitamin one and an anti ageing one containing rose hip. I massage this into the skin for a minute or so
Finally, in the morning I follow up with a mineral facial spf. I admit I am struggling here to find one that I really like. I've tried a few and I'm using them up before I buy more. I really don't like wearing them but everything I have read says this is the absolute number one necessity to protect your skin.
My advice to you is to start simple. I know MLM's are really frowned upon here but I actually got to this place by buying some Tropic products. I absolutely adore their cleanser/toner and moisturiser. I really liked it because it was a simple way to learn about skincare and they did the hard work for me. Now I've got the bug and started reading I may move over to other brands but I honestly think that somewhere you can buy a small collection of products that are designed to work together took the fear out of it for me. (For the record, I do not sell the products myself and you can buy them direct from the website easily)
So, whilst pregnant, start simple. Cleanse and moisturise. Spf every day.