Honey, I feel U -
I know how isolating, tiring, and exhausting it is w/ being a SAHM. Here are a few suggestions that worked for me:
1. Find out if your church / synagogue has a Moms/Tots group. If so, find out when the group meets, and get going! I joined my local Moms/Tots group in my church, and I've been a member for over 3 yrs now. I've developed WONDERFUL friendships w/ other Moms and we've had playdates w/ our kids. It's awesome!
2. Online meetup groups are a good idea, but usually, the group has to collect fees/dues to keep the cost down of being an online group. In this economy, a lot of SAHM's don't have even an extra $10, $20 a month. I'd google something like this, "mom groups in (city, STATE)" where U live, maybe there are resources that U didn't know were closeby to you.
3. Offer to host a playdate at YOUR house in the next week or so. With school letting out for the summer, I'm sure that more of your preschool Mom pals would love to get together....maybe integrate a picnic lunch...if it's in the afternoon, maybe do an ice cream party? There are PLENTY of reasons to host a playdate/kid party...trust me, if U get creative enough, other Moms will want to get in on the action to keep kids busy!
4. Check out your local library. Open story times, activities, etc. Plenty of Moms w/ kids there.
5. Hit the park and strike up a chat w/ a friendly face, especially if her kids and yours seem to hit it off!
6. Take a free / trial class at a tumbling / gymnastics facility, or your local community center.
7. Make your own Mommy calling cards (business cards, just w/ Mom info), and ALWAYS have them handy. Make sure U have your current home/cell/email info so that other Moms can contact U.
Hope that helps, good luck, and feel free 2 msg me on here privately if U need any other tips :)