Here we go!! I am a mom of the 3 y.o. ds and was trying for one more and now I am having twins! Que excitement and crippling fear!

Both ds and the twins are from fertility treatment so I did now there was a chance of twins, I just really didn't expect it. Yesterday I had my first u/s and both babies are measuring on track and have strong heartbeats. I am 6w5d. I have a million thoughts running through my mind all at once and don't even know where to start with trying to process this information.
I am so happy that my family will be complete. We always wanted 3 kids but knew we wouldn't go through fertility treatment again after this time. So I feel very blessed. I am also terrified I won't be able to handle it, I will never sleep again, that ds is going to feel really left out, that I won't get a chance to bond with both babies... the list goes on. I am assuming that is all normal fears?
My one big question/concern right now is what is the chance of something going wrong and having a m/c. I have seen the heartbeats which is a good sign right? But is it still a high chance at 6 weeks? Should I not get to excited yet? I am such a worrier.
Re: Intro
Congrats and Welcome! I have your same fears, you are not alone!!
****siggy warning****
Me 29/ DH 28
DH- MFI (low count, 2-3% morph)
IUI #1 January - Clomid, Ovidrel: BFN
IUI #2 February - Letrozole, Follistim, Ovidrel: BFP 1st beta-25, 2nd beta-56, 3rd beta-45, miscarriage
IUI #3 April - CD3 U/S 4-10. Letrozole, Follistim, Ovidrel CD11 - Cancelled.. TI w/5 follicles-BFN
IUI #3.1 May - CD3 U/S 5-6, Follistim start 5-11 thru 5-17, u/s 5-18 3 mature w/ a close 4th, IUI 5-20 - BFP!
Beta #1 12dpo - 164 & progesterone - 89!, Beta #2 16 dpo - 1189, 5w3d - u/s shows TWINS!
6/19- u/s showed heartbeats! Baby A 111 & Baby B 118, both measuring 6w1d
7/3- Baby A hb 170, Baby B hb 166 - both measuring perfect.
7/18 - Baby A 165, Baby B 171 - both measuring right on track & moving all around!
:-h
Of course there is always some risk of miscarriage but I would just think positive.
I worry about DS too but I know in the long run these babies will be his best friends.
N14 Nov. Siggy: CELEBRATION!