Stretch as much as I should

I’m trying to get into the routine of doing yoga 2 times a week and doing pilates two times a week, but sometimes my uni timetable doesn’t allow for a second session of yoga.
I’ve been going to yoga and pilates regularly (at least once a week) for 6 weeks now, my stomach definitely feels tighter and stronger from pilates, but I don’t feel much more flexible… it’s frustrating that I can’t touch my toes, I have good flexibility in my back and along the tops of my thighs, but my hamstrings are.so.freaking.tight. When I sit with my legs out in front of my they pull my pelvis under me and then I have this big curve in my lower back. I hate my hamstrings!

I’ve done pilates 5 times in the past 2 weeks now, but I hadn’t really been stretching in between, I can do all the back stretches in class easily, so I must be quite flexible in my back. But I still can’t touch my toes, my pilates instructor says every one should be able to touch their toes and it’s pretty shocking that I can touch them :P I’ve never been able to do it, but I’d like to. Before pilates I could only reach the middle of shins -and that was after I’d warmed up and stretched my self out for a bit, last night I could grab my ankles after getting warm and stretchy, so hopefully I’ll be able to hold on to my toes soon.

Joined the uni gym and started doing pilates there, feeling veeeery stretch afterwards, except in my hamstrings… I have very tight hamstrings. Oooouch.