Implantation or breakthrough bleeding?

[paint_thinner717]

Hi
Im hoping someone can help me either through personal xperience or any real medical knowledge.  
I recently switched from the Nuvaring to a pill.  I have never been on a birth control pill before, and my doctor said to start it the week i was supposed to have my period because it hadnt started.  So, i was off nuvaring for 3weeks and started Lutera on saturday apr.21st.  
My boyfriend and i had sex my 4th day of being on Lutera, we didnt use a condom, but he pulled out.  it has been a little over 24 hrs (probably 30hrs) since then.  When using the restroom this morning i experienced some pinkish bleeding when i wiped.  
-Should i be worried & whats the likelihood that its implantation bleeding?
-Is it too early to take a Hpt?
-would plan B do anything at this point if it is Implantation bleeding?
-advice?

thanks

[paint_thinner717]

What about color?  
Also thank you both.

[sehale]

I agree. That would definitely be breakthrough bleeding. Birth control pills are known to cause a good bit of breakthrough bleeding, especially when you first start taking them.

If you don't want to get pregnant, you should make sure you don't have sex without a condom.

[KTowne]

It's impossible to have implantation bleeding that quickly, if you get it at all, which most women don't. It's very likely bleeding due to switching b/c, and very very unlikely it's pregnancy.