I'm not really new to horses, been around them my whole life and been active in riding and caring for them for 7 or so years now. But I'm willing to accept that time spent with horses /= I always know what I'm doing. There is still a lot I don't know. I lurk this forum a lot and have discussed my chronically lame mare a lot, but not much beyond that. Through lurking the forum, I realize there are massive gaps in my knowledge of horse-related things. So in a sense, I think some of my posts do belong in the New to Horses board. This is a pretty basic question, so I guess I just figured it belongs here. Apologies if I'm wrong.
So when I was a teen (15-16 years old) my mom and I purchased a 3 year old welsh pony (or at least part welsh). We didn't do much with her until she was about 5. With the help of a trainer, we trained her up basically from scratch and she is now 9 years old and quite an excellent little pony. I love her quite a lot. The original plan was to lease her out to some nice kid looking for a good hunter pony, but it never happened. For a few years, she was staying at my trainer's barn and she was being ridden by a kid. But we stopped using that trainer and we brought her home and she has been here ever since. I've been really focused on my lame mare and helping my sister with her horse, so I haven't been on her in a while. I've never really done any heavy work with her or ridden her super consistently. Just pleasure rides, mostly flat work in an arena and occasional jumping (usually only like 2' 3'', 2' 6'' tops).
My trainer I had when I was a teen (just learning to ride and care for horses) never seemed concerned about me riding her, so I never really thought about it I guess. I actually did a good portion of her training (with instruction, of course) when she was still really green. I was still green at that point, too, so I'm really glad she actually turned into such a wonderful little hunter pony. I know it could have gone worse. But I learned a lot from working with her and she turned out well, so all is well. But recently I started to worry I am actually too heavy for her. She is something like 12.2 hands (I am pretty sure, I haven't measured her in quite a while) with a medium build. Not super slender and fine-boned but definitely not cob-like either. I weigh 110 pounds, so I am pretty small. When I was a teen I was closer to 100 pounds and even smaller than I am now. She never seemed to struggle to carry me or anything and I have jumped her many times. But am I too heavy for her? We have an arena with a mix of sand and rubber footing, so the ground has a lot of shock absorbance. She's always been 100% sound and seems to enjoy our rides.
I definitely wouldn't want to put too much stress on her joints. I do enjoy her a lot, she is like a little sports car. I have a close bond with her. I'd just like to know if I'm too heavy for her, or if there should be a hard limit on what I should do with her given her size.
Here is a pic so that you can see what kind of build she has. Just took this pic a few minutes ago. She's mostly shed out, so I took her blanket off for the pic and put it back on after.