Maternity clothing Q

My only DD is almost 6, so it's been a while since I've been pregnant... and I was thin pretty much the whole time I was pregnant with her (start weight was around 130). Now I'm a little below 200 after losing about 55lbs. My first time around, I didn't have to start wearing maternity clothes until around 5 months, but my pants were unbuttoned after maybe 3-4.

What should I expect this time since I'm heavy? I'm about 6-8 weeks (going to the doc in an hour to find out exactly ) and I so wish I had held on to my larger jeans instead of giving them away! Needless to say, this pregnancy wasn't expected.

I started my pregnancies at 180 and ended up at 250. I have Large and XLarge maternity pants/shirts. I was getting ready to donate them to good will. If you would like them I will send them to you no charge. PM me if you are interested. The clothing worked for me all the way up until delivery even with gaining 70 pounds.

 There is TONS of stuff out there, especially since plenty on non-maternity stuff LOOKS like maternity stuff these days. Target has great stuff, and it runs large. 
I got pregnant at 205 and I had to unbutton my pants around week 5. However, everyone is different, so you really can't compare, and most people show sooner the 2nd time around.

Congratulations!  That is exciting news:)  I don't have any advice, all my kiddos, have four legs and did not come from me...lol, but I wish you the best of luck!