So I've been wearing leggings and yoga pants I got at Costco (they're called "fat free dressing", hehe) that have tight, high waistbands so they're like spanx and pants all put together. They're comfy AND slimming, and they remind me a lot of maternity pants, the way they go all the way up past the belly. Do you think pants like these would be harmful to baby if you're pregnant? If not, how far into the pregnancy would you wear something like this?