Omega 3 is in fish oil, usually multivitamins won't have it. You can buy fish oil separately, there are prenatal fish oil on iherb not too expensive
Omega is only in fish oil would recommend you to take fish oil with dha from gynae when pregnancy and breastfeeding.
Do get the supplements directly from your gynaecologist or ask him/her for a prescription...
I bought mine at my gynae's clinic. I had multivitamins and omega 3, separate
Very little formulations for multivit includes dha, you may consider separate tabs
Thanks love!
Rina