Vitamin Recommendation

I am a mom of 3 young boys (youngest is 3 months) who are extremely energetic.  I am trying to lose my pregnancy weight and starting taking a variety of vitamins that started making me extremely lightheaded.  Once I stopped, it went away.  I also have a family history of ovarian & breast cancers.  Also, I am a lacto-vegetarian.  So basically I am looking for what vitamins are recommended for my situation.  Here is what I was taking:

multi-vitamin (what kind do you recommend?)
omega-3
iron (for energy)
calcium
collagen (for weightloss and healthy hair & nails)
ginkgo (for concentration)
vitamin-B (for energy)
aspirin (my dad - a doctor - said almost everyone should take one daily)
heliocare (sunscreen)

What do you recommend I change?  Thank you and please help!!

[Renee Radenberg]

Are you breast feeding your 3 month old?

[ericasinik]

No I'm not.

[Renee Radenberg]

Recommend a general multi-vitamin with iron only. You do not need the other supplementations due to the multi-vitamin and you are getting nutrients from the food you eat daily.