Yes, Babynovice, I did go to baby groups. With my first we had my ante natal group who use to meet up every two weeks post natally and we kept that going (if I still lived in that area, they still do it).
I then went to toddler groups with ds1 but this use to stress me out (I now realise it was pretty stressful becasue he has been dx asd therefore thats why he was hitting other children and running about wildly but this doesn't bode well with meeting other Mums).
It has recently been suggested to me that maybe my depression has been building for some time - if true I believe this is when it started after ds2. I didn't go to any groups after this and moved when he was quite small to a new area again, and since haven't been to any with ds3 either.
You really should try to go somewhere, it breaks up the week and gives motivation to 'do' something. I am so busy at the moment with my three that my life revolves around appointments and phone calls and nursery runs BUT ds2 is in desperate need for more input so its a shame I don't go to a toddler group - again an inability to meet new people stops me so I do know where you are coming from.
Your dp sounds like he would and could really support you, you should bite the bullet and tell him especially if he's seen you in tears, he will understand and help you perhaps coming to the appointment with you. I don't cry so when I put on a front for the world this does include dh, which i know is a shame but its a coping mechanism.
Keep posting babynovice, its good to talk to you. Not excluding others joining in too, just encouraging babynovice!!!!