Bbhope80, try avoid cold drinks, it really helps a lot. I used to drink a lot of cold drinks until i see traditional chinese medicine and she told me to avoid. I slept better at night after that and have less backaches and cramps. Occasionally, I do cheat when my hubby drinks cold drinks and I just stole a sip or two. Just dont't drink too much can . A cold womb can make it difficult for trying to concieve.
If you look at animals, they also have to keep the egg warm before it hatches (I always quote animals as examples...I think I watch too much nat geo and bbc -__-)
Same theory goes for humans
I got preseed at Watson's at about $35. Unity sells much more ex at $38.